Tucker Carlson is in a contract dispute with FOX, his former network and until that is resolved Twitter is the only place where he can be viewed. Tucker Carlson's personal Twitter account existed prior to his Fox contract and is not subject to the terms and agreements, remains an outlet for him to use while not violating his non-compete clause.
Tucker Carlson reached an audience that any cable news network executive would kill for – as his debut 10-minute video captioned "Ep.1" of the brand new "Tucker on Twitter" was seen more than 35 million times by Wednesday morning.
Tucker Carlson has made it clear that if Twitter suppresses or uses their internal fact-check mechanism known as ‘Community Notes‘ to control his content, he will exit the platform.