Yeah. I think part of the reason Dexit was done was so that all the content would be available in the game. Despite SwSh technically having less Pokemon than other generations, you are able to catch 99% of the Pokemon available in both games if you have an internet connection and the DLC.
This still sucks though, and might be even worse than Dexit since it fundamentally changes the way a lot of Pokemon need to be played in singles. In Sword and Shield, I wasn't a fan of how moves were removed, like Return, Psywave, or Pursuit, since that really hurt a lot of Pokemon like Stoutland, Bronzong, and Tyranitar. It'll really suck if this also the case in Scarlet and Violet since I really enjoyed stuff like Triple Axel Hitmontop, Roost Scizor, Hurricane Zapdos, and Roost Zekrom / Reshiram. Still, for Gamefreaks official catridge metagames, I doubt these changes will matter that much (and I am starting to prefer these metagames to Smogon's ones currently since they are much faster-paced). Hopefully Scarlet and Violet continues keeping TMs and TRs so most Pokemon will still have good moveset flexibility
I guess the one saving grace is the purge of Toxic and Knock Off, which I think is a good thing since these moves were pretty automatic moves that most Pokemon could click if they wanted to cripple a switch-in for free. This also had the by-product of making defensive Psychic-types more sucky than they already were.
Well, we'll see how they'll decide to approach this issue when Scarlet and Violet eventually releases.