>>clearly drunk passenger wasn’t tossed off the plane.”<<
The modifier of “clearly” makes it an opinion as in “observably.”
And even if he was to bring suit he would have to prove he was NOT drunk (in civil court the complainant has the burden of proof) AND prove damages (a random anonymous poster opining does no damage) AND track me down (good luck with that as only JR knows who I am and I am sure he would not even waste his time responding to an out of state civil subpoena, but who knows?).
Had I just said “drunk” your position might have merit. Might.
And I still think he was drunk.
Don't think so. You make the charge, it's up to you to show that it's true. Otherwise...