I clearly havn't read all of this thread, but personally I think Elon as the owner of Twitter makes him an extremly dangerous individual. He can very overtly control what content it promotes. A prime example is the recent Carlson/Putin "interview". I don't follow carlson nor do I think any in his general sphere, but for 2 days solid, there was hardly a scroll that I didn't see the interview. Personally for me the abundance of it's appearance on my timeline felt very contrived.
When you have a guy who at times is clearly impetuous, having pretty much direct access to 100s of Millions of people, and being able to brute force (or more disturbingly, subtly) control the flavour of what they see, it's very dangerous. Especially when you can see that often he just considers it his personal plaything