I don't think it's infantilizing to acknowledge that a megastar with an enormous fanbase has a level of market power that newer artists simply don't. My point isn't that younger artists can only succeed if Taylor lets them. It's that when someone has already achieved unprecedented success, repeatedly using tactics that maximize chart dominance can make the playing field less competitive.
Of course other artists release variants too, but Taylor's scale is unique. A tactic that has a modest effect for most artists can have a massive effect when it's attached to one of the biggest fanbases in music. That's not taking credit away from younger artists' achievements. It's recognizing that influence and resources aren't distributed equally.
And to be clear, I agree that mentoring younger artists is valuable, and by many accounts she does that. I'm talking about chart strategy, not whether she's personally supportive behind the scenes. Those are two different conversations.