He is responsible for his own tweets. The story he tweeted and later deleted was tissue thin - an opinion piece saying 'I don't believe the official story, here's an alternative explanation I heard from a source' followed by a long (multi paragraph) verbatim quote of sordid claims with no attempt at corroboration. It read to me like the 'source' was someone on 4chan.

He spent a lot of money to fix Twitter..he should have probably had a game plan going in.

At least the bots help steer the conversation and provide useful PR services for the advertisers.

The new thing is that the owner of Twitter is pushing misinformation. He bought it so it's his problem now. It's correct that he's blamed for it.