That's the thing, Starmie & many other Pokemon are forced to use HP Fire just to hit Ferrothorn. The entire metagame is more centered around this ONE Pokemon than it is with even weather. And that's saying a whole lot. Weather is an extremely complex issue, Ferrothorn however is one Pokemon.
I agree, the fact that a Water/Psychic type must use a coverage move to defeat a Grass/Steel type is absolutely ridiculous. Starmie should be able to muscle through its counters using its STABs and BoltBeam alone. How dare it acquire a viable check?
I'm not really sure what game you've been playing, but ever since the days of RBY, pokemon has been a team game. You are aiming to force the opponent into a position where one of your pokemon can eventually sweep, and that simply involves strategy. Ferrothorn is number one and your main sweeper is walled by it? Then you damn sure better have various ways to check it, or you will consistently lose.
Starmie has no business running HP Fire anyway, just leave Ferrothorn to a teammate.
You say that all he does is SR & Spikes, but those have been proven time & time again to be the strongest attacks in the entire game. There are 19 Fully Evolved Pokemon out of the 649 Pokemon that are immune to Spikes & not weak to Stealth Rock. That includes all released Magic Guard Pokemon.
Add Leech Seed & Gyro Ball to that and with Ferrothorn's type, ability, & stats, he perfectly fits the Uber criteria for a Support Pokemon.
Skarmory can use Spikes and Stealth Rock (along with more reliable recovery, IMO). Forry can Spikes, SR, TS, and RS. Deoxys-d and Deoxys-s (the latter being much less effective) are also capable. The moves are everywhere, Ferrothorn isn't the only user.
And while this doesn't currently apply, once more berries become available, we will undoubtedly start seeing the Sturdy + Custap strategy, which all but guarantees 2 layers bar priority.
Ferrothorn is a different kind of broken from everything we've banned in recent years. Everything up to this point has been Offensive. (Minus Deoxys-E/D in DP) The Dragons of 4th Gen, Blaziken, Swift Swim, all banned for their offensive traits. Most of you need to realized that "broken" doesn't always apply to offense or even pure defense. Ferrothorn doesn't have to set-up to set-up like an offensive Pokemon, he doesn't need a Sub to do his job, he has NO COMMITMENT to stay in if one of his so called "counters" switches in. His only true counter is Magnezone.
This is true, not everything has to be offensive to be banned. I still doubt that Ferrothorn is so extremely supportive that it needs to go though. I also suggest you look at other options for countering it, because Magnezone is definitely not the only counter. Assuming the standard set, Ferrothorn is hard countered by anything that resists grass and carries a fire/fighting move, or is simply bulky enough to KO it before getting KOd itself. Infernape, Heatran, Salamence, Hydreigon, Reuniclus, Conkeldurr, Volcarona...the list goes on.
It is a little strange that you rant about how a pokemon doesn't need to be offensive to be banned, but then cite a perceived lack of counters as a reason to be banned. If anything, we should be looking at the amount of support it provides, which is not considerably more than similar pokemon.
It completely defines what we don't want in the metagame. One Pokemon has made many Pokemon that have been proved completely viable last Gen completely nonviable. (using 4th Gen as a comparison is bad, but I think it's called for here) One Pokemon completely invalidates entire play-styles. One Pokemon has crafted the metagame around it. We are not playing Pokemon. We are playing Ferrothorn. (+ the Weather Channel)
"Oh no! Stealth Rock has made the use of previously viable pokemon completely
unviable pokemon! Whatever will we do now!?"
The argument you just made is, simply put, ignorant of how the metagame works. Not everything is going to be competitively viable forever. Just look at Snorlax and Zapdos. OU stalwarts for 4 generations, but they couldn't make it in the 5th. Note that both commonly carry methods of dealing with Ferrothorn, so clearly it is not Ferrothorn alone that makes pokemon unviable. It is simply another factor. Weather wars, new powerhouses, etc have created an environment where some pokemon simply will not succeed.
Once Shadow Tag Chandelure comes out, well hey! Ferrothorn has TWO counters now!
He fits the Uber criteria perfectly but you all seem to be brushing it off like "Oh Ferrothorn's just Ferrothorn." That's not how it works. That's not how the Suspect System was EVER meant to work. We're not banning things because they give our team a hard time. (Looking at you Garchomp) We're supposed to be looking at things from a metagame perspective. Not your team. Not my team. The entire metagame.
All this coming from a Sun Team user that has very little issue with Ferro with his own team. Metagame perspective, Ladies & Gentlemen.
All bold.
All the time.
You love it.
We no longer use the Uber criteria (most people were just using the Support criteria to ban pokemon that didn't fit the offensive criteria anyway), we simply go by our own experiences. With enough experiences, you get a good idea of the metagame as a whole. Ferrothorn is by no means too much for the metagame to handle, and it does much more positive things for the metagame than it does negative.
The bold is also unneeded. If you bold nearly everything in your post, then it loses its effectiveness. We can read, I promise.
EDIT: I've already made my stance on Garchomp. It is checked much more easily this gen than last, and many teams have more than 1 check to it
by default, not intentionally. These aren't the days of Garchomp/Skarmory/Bronzong/SkarmCheck/BronzongCheck/WildCard.
No suspects, IMO.