This "barrier of entry" rhetoric reads like a pure buzzword dreamed up by AI pushers with no actual meaning to it. The barrier has NEVER been lower to produce books or comic strips or anything else like that. Hell, look at xkcd, there's nothing technically challenging about it, it's quite literally just stick figures, yet it's massively popular because it's clever and well thought out.
What exactly is this enabling, other than the mass generation of low quality, throwaway crap that exists solely to fatten up Altman's wallet some more?