I find the title confusing/misleading. "X has come for Y" typically means that X is out to get Y, at least to me. It doesn't generally mean "X is starting to use Y now".
In the case of genAI using a particular expression style, there is less difference between those two meanings than it may seem. If genAI picks up an expression style, it means that style is less suitable for use by humans.
That's a fair point, though I still feel like it's a very roundabout way of saying "Y is going to die because X is going to use it so humans won't want to use it as much".