Update: Twitter's Head of Trust and Safety and Head of Ad Sales are also gone.
Meanwhile Elon Musk is running around haphazardly trying to monetize the entire platform, sacrificing verification for no reason and replacing it with a paid tier. Other platforms like Youtube offer to verify you for authenticity when you reach a certain number of subscribers, which doesn't have to do anything with also having a paid tier. The difference is that Youtube Premium pays content creators, not charges them like Twitter Blue. Sure, content creators will pay to be featured, but there aren't that many of them.