My hang up with the mentality being discussed is that there is a point at which trying to go for mass appeal might not be to quality or financial benefit overall for the games.
As discussed a lot, Pokemon is a multimedia franchise, of which the games are just one part, and (in terms of main-series) arguably not even the primary one any more despite being the inception. Things like Go, the Anime, other Mobile Games, the TCG, Collectable Merchandise all are tied together by the IP and the Creatures, but the concepts themselves intrinsically appeal to different tastes. This is not to say one is more worthy of attention than the other, but one of the delicate balances you have to strike is giving something specialized to the specific sub-franchise you're creating while keeping it inline with the larger scale IP and image.
This is where my contention with things like LGPE or SwSh (or at least what they push to sell SwSh) stems/stemmed from. I don't inherently dislike a lot of QoL options Go added like non-Battle Capture mechanics, Raid bosses, full Overworld visible counters, and generally streamlining the Capture aspect of Pokemon. My issue is that alongside these improvements, games integrating them feel as if they are stagnating or cutting back on other features that help form their identity, with the thinning amount of Single Player Post-Game engagement, undercooked story/supporting cast, and significantly greater emphasis on Go as the Spin-off rather than just the mechanics of it easing newcomers into other entries.
I can't speak too well first-hand, but I also have heard some contention about Goh in the anime (who's obviously there to represent that side of the franchise next to Ash as the Battler) kind of stepping on toes and being used/pushed into episodes focused on Ash's Coronation challenge significantly more often than the reverse happens. Friends of mine who usually enjoy the anime have been watching less because they're tired of Goh being more present than they feel he needs to be over mainstay elements they watch the show for, which is sort of the issue I describe in microcosm: If I wanted the experience of Pokemon Go, at some point it becomes better for me to just play Go rather than play/watch other entries do "Go but with a different medium's MO to contend with", at which point integrating those changes can lose sales/engagement rather than increase it if the Hardcores drop off and the "casuals" don't adopt it enough to compensate (as opposed to simply continuing with the media entries they already like).
Pokemon is by no means there yet from a marketing standpoint given the sales on SwSh, but I do think it's a concern to be wary of with future projects to not dive headfirst into yet more Mobile/Go practices and homogenize the Multimedia despite that wide-reaching variety being a major point behind said multiple formats in the first place
