Thaumaturge
Wandering. Not lost. (He/they)
Basically, "It isn't core," is insufficient justification to begin with, as far as the player is concerned. The player *doesn't care* if it is core, he or she wants it anyway. So the core/non-core distinction is meaningless in this sense.
So you think, from an average player's perspective, the same level of angst exists now as in 1996 if the player wants to play a wild mage and is told no?
Interesting. (And please correct me if I'm restating that wrong).
I think, at the very least, the on-line community and the awareness that other DMs are allowing wild mages in their games has increased said angst.
However, I remember having arguments with friends who wanted to use the sci-fi halflings in my Dark Sun game. So I don't, at all, dispute that as a thing that happened and continues to happen.
I also acknowledge I read more about said angst now than I did then, which almost certainly increases my perception of its prevalence.
Still, regardless of the existence, or growth, of player angst, having more options in the PHB only improves the game. I'd much rather have to tell a player no to wild magic than invent a wild magic system and then constantly tweak it for balance reasons.
Thaumaturge.
And, no, you may not play a sci-fi halfling in my Dark Sun game.