Re: Entitled douchebag, much?
I think he knows exactly what "cancel culture" means, it's just that in his crusade to "save Freenode and FOSS" he's rather lost touch with reality.
In his mind, he's convinced that what he's doing is helpful and righteous and will make IRC a world-leading superpower of messaging and collaboration. So it only makes sense that any project which rejects his plans is trying to destroy ("cancel") IRC, FOSS, and - because he's apparently a raging egotist - himself, either through intentional maliciousness, or because they've been "infiltrated" or brainwashed or something.
He could be playing eight-dimensional chess and everything's going according to his plan, but Occam's Razor suggests he's rather just delusional.