The real issue I see coming down the road is whether the content being generated for an audience is valuable or not. All the personal fluff in the world will not satisfy someone looking for instructions to make their life better.
Google understands that. They'll over-correct for a bit as they always do but base their assessment on the value of the content and whether visitors are going to make use of it.
When internet marketers were flooding the Web with spun gobbledygook articles for SEO purposes, Google lit a fire to that abuse pretty quick. Those pages were trash with no value to the end user.
I think that content should be judged by it intent, its effectiveness and purpose; more that what machine or human created it.
I'd love to see Google punish the trash clickbait headlines that are so prevalent right now but they won't. Trash headlines draw visitors.
I still think that AI will be more of a tool or assistant than an thought influencer even in the future. Humans seem to have a knack for using tools rather than tools using humans. So far.