Is that a Q and a cross in his left hand? The best interpretation I can give it is the fucking shit bag is going to die and he thinks what? He's going to come back from the dead? Be the world's Jesus? What a fucking insane mfer, no matter what it means. He needs attention. That's a given.
It’s frightening- maybe as you said, he knows he’s dying and he’s taking the world with it - nukes?
It's Q+ - which, to the QAnon adherents, means he really is Q. The phrase 'nothing can stop what is coming' is used by them too (it refers to the arrests, trial and execution of Hilary etc.). The base got shaky when he wouldn't release Epstein files. Stuff like this keeps them sweet.