As the content becomes even more indistinguishable from human written content, wouldn't it be valuable to bad actors who wish to perpetrate heaps of unique writing representing their perspective? Not trying to fear monger (although I may sound like it) but while I agree 99.9% of people will stop posting "AI wrote this blog post" etc blogs, there are bound to be parties that begin mass producing content and infiltrating the non tech savvy person's timeline?

Sounds like fear mongering. Its not something you need to worry about because the internet is already filled with paid influencers parroting the same info.