If someone told me "I don't like Musk, I'm going to stop using Twitter", I'd say "good for you". I think it's great when people stand up for their beliefs and put their money where their mouth is.
If someone told me "I don't like Musk, so you're not allowed to use Twitter", I'd tell them to go fuck themselves. It's none of their business whether they personally like what it is that I want to do as long as I'm not hurting anyone.
Inb4: I'm not a Twitter user and probably never will be, but I believe very strongly in the freedom of expression, even when that means I have to hear things that I don't like.