Faolyn
(she/her)
So, you're saying it's still 100% optional material then. You weren't forced to use it in your game.It's hyperbolic. No, nobody is being coerced into using Tasha's on pain of death, but the book may as well be an "unofficial patch" that addresses common complaints about 5th Edition and a good deal of its contents will assuredly be folded into 5.5.
Anecdotally, when I banned it at my table because I didn't want to deal with more player-facing stuff, the overwhelming response was "But WHY, oh my GAWD, that's so LIMITING, UGH."