The goal has always been engagement prisons. Where people never leave the platform. With generated content this must seem like a final step. They don’t need to make people to interact with each other in ways that keeps both of them engaged. They don’t need to leech content from other sites while preventing people from going to the site. With generated content people will interact with themselves while engaged in completely fabricated content. It’s even more dystopian than ever.
Voats problem wasn’t engagement. It was literal nazis.
They tried to prop up a thin veneer of legitimacy but at some point they just stopped caring. The front page became blatant “kill all [whatever]” type posts. That’s when engagement completely collapsed.
Lemmy has some clearly in bad faith instances which are probably run by nazis. Federation seems to be doing its job of resilience.