Case in point: Musk recently polled his followers: "Free speech is essential to a functioning democracy. Do you believe Twitter rigorously adheres to this principle?" and 70% of respondents said "No" [1].
Also, many conservatives believe that banning Trump while allowing the representatives of various autocracies globally is hypocritical.
Of course, you can argue that Twitter is a private company and can do whatever they please. You can also argue that Trump and his followers are a danger to society, or Elon and his followers are biased. I'm just communicating a perspective I believe exists broadly.