I was also looking into former Twitter engineering manager Leslie Miley (@shaft on Twitter) earlier because of how vocally salty he's been on the Musk acquisition, only to find out this guy was also a CTO for some Obama foundation. The bio should give you all you need to know about what type of person this is.
Let's look at a recent statement he made to CNN, because it is interesting getting a glimpse of the typical mindset going on at these type of social media companies:
"Any time somebody says free speech, it always means free speech for the powerful. It does not mean free speech for the less powerful," said Leslie Miley, a former Twitter engineering manager who started its product safety and security team and left the company in 2015. "[Musk] says he wants to make it a free speech platform. What he wants is a platform to say what he wants — and wants other people like him to say what they want — without any accountability."
Let's get one thing straight, Leslie is not for free speech and doesn't even pretend he is. If anything, what Leslie seems to want is equity based speech, where again, certain groups viewed as marginalized get special (often preferential) treatment and exceptions over others. The "without any accountability" is the part that always shows these people hate opposing points of view, and it is along the same train of thought as the often echoed phrase "freedom of speech is not freedom from consequences." These people want to be able to punish wrong think by "holding people accountable," and usually push to kill online anonymity so they can doxx opponents.
Musk has made no indication that his intention is to persecute the status quo "blue checkmark" crowd for their opinions. So far the rhetoric from him has been merely relaxing the rules and opening up the dialogue. Leslie's response is his fearful realization that their unquestioned narrative control may be coming to an end on Twitter, and that they will now be called out for having bad takes or pushing absurdities, without having shadowbans, bias moderation, and other tricks to protect them. But one can only hope this will actually loosen their grip on policing culture, at the very least we still have a lot of seething from them to enjoy.