There are lots of romhacks for that.
Pokemon Snakewood LPHow about they add a "retro mode" where players can battle each other with 2D sprite graphics. All they'd have to do is create sprites for every Pokemon and move Gen VI and beyond. Minimal effort, minimal data footprint.
Or they could have a mode that reuses the 3D Alola models and forbids the use of Galar Pokemon and mechanics, since data shouldn't be an issue for Switch.
Ha, I actually suggested the 2D thing somewhere else. They did something like it in Pokemon GO for April Fool's last year and it was honestly pretty rad, I still want it as a toggle.
I'm hesitant to even weigh in on this problem since I exclusively play gen 2 (and GO), and my latest console is a regular ol' Wii. But there sure are a lot of pokemon. Maybe they shouldn't add so many- or maybe classic ones can just look classic. Idunno, and I'm not the target audience at all.
WTF: I set my laptop down awkwardly and it rebooted. When it came back, Firefox had deleted all my cookies. Not only do I have to log back in to various sites, but Youtube defaulted back to the garish light theme. Not Youtube's fault, I respect why they tie it to device rather than account. But WTF Firefox? This has happened a few times before. I guess the cookie data gets corrupted by an incomplete write, and completely thrown out... Kinda sucks.
Edit: At least it remembered my several hundred tabs. I lost them by my own mistake a few weeks ago, took fore- well, weeks to build them back.