Personal politics may have made them a little more skeptical of a story sourced from rudy guiliani than one from a sketchy source on the left - but honestly if you’re not deeply skeptical of stories sourced from rudy at this point, I’m sorry to say but you are biased away from truth.
If you want twitter / fb / etc to be dumb pipes you need them to operate outside of market forces. Either by being regulated by gov as a common carrier, privatized by someone with high minded ideals enough to resist banning anyone who criticizes him and doesn’t mind losing money on it, or by being run by some non-governmental foundation. Under capitalist motivations, you’re not going to get a dumb pipe.
So far none of those things are happening. Expect twitter to continue to be not a dumb pipe, not a zone of free speech, just biased in a different way under its new management - less about maximizing $$ and more about protecting its owners interests.