^ To be clear, not everybody is doing this. But anybody who is, has an obvious way out: specify/define your own thread OP.
Doing so will avert circular arguments. It will prevent needless bait threads over what versions of the characters you'd subjectively prefer were actually in the thread in contravention of the actual thread OP's intentions. We all agree that most comic characters actually have distinct incarnations on-panel, via retcons, specific amps, personas, etc.
On one hand: If a thread OP is more specific, that would promote constructive discussion over a specific library of actual comics. Which are up to interpretation, sure, but at least the discussion would be about what happened on-panel or not. You'd avoid semantics over terminology/canonicity. You'd focus on specific comics. It's their thread OP, after all.
On the other hand: If a thread OP actually wants to blend incarnations and utilize a homogenized conglomerate character, then they can actually do that too and invite discussion over whole swathes of comics. That would promote appreciation of legacy and expanded history, if not current canon. But it's their thread OP, after all.
But currently: If they just want to otherwise obfuscate constructive discussion? Then they'll just create more bait threads, recklessly throw out loaded terms, invoke obscure mod rulings, and chase each other's tails endlessly rather than discuss comics. I dunno, mang. I'd rather they discuss the comics.
At the very least, don't drag past mod rulings into these tete-a-tetes. Ya'll could just as simply specify/define your own thread OPs and completely avoid all this semantic bs. And if you refuse, well it's obvious why.