And not just this, but also the less you’ll be able to learn from casually seeing them in-game. Especially with the shift towards open world and therefore a greater percentage of optional trainers, a lot of Pokémon won’t be seen in a battle setting unless you catch and use it itself. And even if you do see a Pokémon once or twice in optional battles you participate in, half the time you’re not paying much mind to the animations of the enemy. If they get to attack and don’t get outsped and OHKOed, anyway.as more and more of the concept of a design shows itself in animations, the less you'll be able to learn from the 2d stock art (and from screenshots of models from leaks)
It doesn’t mean having good and thought out animations is bad obviously, but it retains the importance of mons’ concepts being fully present and clear in their base visual designs.
Maushold is a great example of this where it’s not used in a boss fight (afair) so the main time you see it if you don’t use one is when it’s walking around in the overworld, and that animation is nothing extraordinary. And I’m pretty sure it’s only in that easily-missable route to the Pokémon League at like, level 4, when the only time you actually have to go on that route is the endgame. So if you wanted to use one and just never encountered it, at that point when you first see it you don’t want to train it up.
Similarly in SwSh a lot of great mons suffered from being Wild Area encounters. It’s a weird impact of open world design, but people only like things they’re exposed to and an open world gives the devs less control over what players do get exposed to, which can definitely harm the popularity of some of these Pokémon. Base game SV had “type specialists” for every type, albeit some of those are single-Pokémon spotlights in the titans, and a bunch of new Pokémon still fell through the cracks. Pretty sure they stuck Squawkabilly in the opening cutscene to ensure you’d see it once, because a lot of players will never see one again lol. EDIT: Actually E4 Larry uses one doesn’t he, but you get the point
Don’t get me wrong, not necessarily a unique phenomenon for open world Pokémon, but it is a reversion too. Gens 1-3 had some hyper obscure mons, 1% encounters not used on any notable trainer teams and all that. Gen 4’s obscure new mons happened through a different way (event mons / honey tree encounters mainly) and D/P also ensured every mon was used by a trainer somewhere. But Gens 5-7 mostly prioritised players getting exposure to the new mons besides like, Dhelmise, which was beneficial to those gems of new mons IMO. Modern Pokémon did used to prioritise this, I assume the reason 8/9 fail in this regard more than 5-7 is teething pains with making it work with the open world.
[wrt Maushold having mouths… yeah show me the mouths in the video game please lmao, it shouldn’t be an obscure trait for the mice mons]