Faolyn
(she/her)
You're assuming that there's "special" pressure to use Tasha's or whatever rules exist.Okay. So first there's no pressure. Now there is pressure but it isn't different or noteworthy? It's okay if your opinion changes, mine changes on occasion, but you're kind of shifting the goalposts on me here. It's noteworthy because Tasha's represents the most radical change in how PC races are handled in the last 30 years. It's noteworthy because it's going to be the default assumption for how race is handled if it isn't already.
There isn't. Just the standard amount you get when players find something shiny and new. If your players find a new archetype from a third party source that they want to play, do you consider that to be pressure? Are your players like really toxic about forcing you to acquiesce to their demands or something?
There is absolutely nothing forcing you to use any particular rules at your table. You are free to allow Tasha's or disallow it. You are free to allow the races in MMotM or disallow it. If you don't like the way you think 5e is heading, you are free to come up with your own house rules, play any other edition of D&D, or move to Level Up, Pathfinder, or any other of the thousands of other RPGs out there.
Literally all the rules are optional. Even if 6e comes out and the Tasha's rule is the norm--which I hope not; I love floating ASIs but I find the way they did the customizable lineages to be incredibly boring--you can still say "nope, sorry, in my game, you use these rules" and hand them binder or house rules.
Don't be surprised if not everyone likes that and wants to play with you as DM--unless you consider that to be "pressure."
Seriously, I have to wonder if people put up this much of a fuss when suddenly non-humans didn't have level limits and could join classes that were previously forbidden to them. Dwarf wizards and half-orc paladins! I'd consider that to be a much more radical change than letting you stick a +2 in a different stat, or even the build-your-own-race thing, since opening up all classes to all races truly broke down what it meant to be a member of a race.