Originally you asked "that you think have improved things".
And then someone gave a valid response.
And then you responded to this response by saying "Twitter as a private entity does not have to just say, "Welp, it's legal" to anything that happens on their site."
This response is a non sequitur.
Nobody in this thread said that twitter is forced to do anything. Instead, the original claim is that this was an improvement.
And yes, twitter is allowed to make this change where they censor less things.