Section 230 has nothing to do with his decision.
What I am pointing out, is that when section 230 was in the news a few years back regarding corporations & official "news", MSM and government publicly set precedence by stating section 230 did not apply to a private company, therefore Tucker on the Twitter platform doing his show, literally called "Tucker Carlson" could not even be entertained in a courtroom as breaking a clause.
Yes, WE know what it is, and what Tucker having a "show" on Twitter looks like.
But because TPTB (FBI/CIA/MSM), set precedence a few years back regarding "fact checking" etc., they shot themselves in the foot, hence the analogy I used.