I get that a lot of early movepools are poorly optimized and not well thought out, but who signed off on Flareon getting Smog at level 57?
Smog Flareon is really something because
1. It wasn't even in its movepool originally, so you can't fully go "oh, well, you know how janky and long RB's development was!", it was added in Yellow! Specifically at level 42! To replace leer (which was now
47 so really it replaced Rage I guess)
2. This was kept through Gen 2 & 3 unchanged, as they largely just copy pasted movepools forward for a lot of Pokemon
3. Then gen 4 happened where all the eeveelution movepools got expanded but also all somehow terrible in different ways they decided to not touch Smog beyond bumping it up to level the previously mentioned 57 due to earlier additions. But it's not like they're opposed to tweaking becfause Leer became Scary Face
4. They FINALLY lowered the level in BW2, because they lowered the levels of everything, but only to level 33 which is better but still you know. bad. Because it's Smog, the move no one wants to use in gen 1 much less 5
5. Then this stayed through all of Gen 6
and 7 despite other tweaks to the moveset going on....onyl to finally change in Gen 8 where the way they restructed most movesets by power finally landed it where it is much more natural: level 20
Which is frankly still too far deep for
Smog, a move learned by every other Pokemon at sub-20 levels (most of them level like 1....) aside from Gen 1 Magmar (Level 52 but that IS because of specific design jank) and the Tepig line (which get it at level 19/20) because it's bad.
And frankly the tepig line probably shouldn't learn it at level 20 either!