CleverNickName
Limit Break Dancing (He/They)
I don't think anyone has any hard data on that. I guess it depends on what you mean by "using it." One character using a single spell or feat from Tasha's? Probably. Every single character in the game using only the subclasses, spells, and feats from Tasha's? Probably not.Still probably not a majority of games using it though.
I think it's safe to say the majority of games would be somewhere between those two extremes, but that's just my own assumption. I'd love to see real numbers on this, if only to see how it compares to MMotM and XGtE. Going by sales alone, it's safe to say that Tasha's is somewhere between the two.