Creator count probably hasn't gone up per capita. It's just that that one band I liked from my high school can put all their music on SoundCloud, have an Instagram page and a TikTok and be discoverable to people worldwide instead of selling cds they burned and applied inkjet labels to and selling them to other kids at the same school.

I suspect it's more a matter of everyone being more visible, a helping of Dunning-Kruger, and a dusting of narcissism to choose to be visible to everyone because everyone cares.