This was something that I gotta admit I only saw coming out of the last decade of discussion regarding fantasy tropes. It comes from viewing a lot of fantasy/fairy tale tropes in the eyes of a modern concept of autonomy. I think it's because technology has made things that were once thought of as magical possible (paging Arthur C. Clarke). We have drugs that can act like charm or sleep magic. We have technology that can always monitor us. We are driftingly slowly into transhumanism and what it means to be human. And we're trying to balance that with concepts like Right to Privacy, Right to be Forgotten, Right to Individuality, etc.
I think this conversation is going to keep going, and I don't think it stops at "charm spells are evil", because as I keep saying, a LOT of D&D magic has some very unethical or amoral elements to it, and if we are going to put charm magic into the "problematic" bag with necromancy, I think a lot of Conjuration, Divination and Illusion (and a fair amount of Transmutation) are going to join it.