A valid point, but not relevant to the situation as I am focusing only on Cataclysm. Gabriel was dead the moment that the Cataclysm touched his skin. Sure his miraculous slowed down the rate of the corrosion, but he wasn't able to resist it outright.
Also you are misunderstanding the point when I said permanent. When Chat Noir took his Cataclym, the effects were grevious, but given he or his suit wasn't damaged it's safe to say that his damage wasn't permanent, he was just badly hurt. Gabriel on the other hand was immediately affected, so without the Miraculous Ladybug to cure him his fate was basically sealed.
True, he was injured by the effects of his own Cataclsym, but you had earlier mentioned Claw Noir, who was able to (in your words) "truly tank it like a boss". While the scenarios were different enough that the effect is inconcistent, both Chat Noir and Claw Noir were shown to take a Cataclsym and walk off without being immediately turned to dust. The only real difference is that Chat Noir was partly injured but suffered no suit damage while Claw's suit was damaged but he was otherwise fine.
The only thing that could mess up the arguement is that we can't verify if there is a black mark when Chat got hit, but given that Adrien didn't notice any marks on himself as he retransformed and was able to tank two Cataclysms without being incapped, I'd say that's proof enough to suggest that he resists his own power.
In contrast, take Gabriel. When he got hit with a Cataclysm, he was both visibly hurt AND started immediately being affected by the corrosion effect. Definetely not someone who resists deconstruction, especially when you compared him to the two Cat Heroes above.
Keep in mind that both people shown to resist Cataclsym are the same people who use the Cat Miraculous, so while the list of people Cataclsymed is fortunately low, the record itself is enough to suggest that only Cat Miraculous users can resist a Cataclysm, as anyone else hit by it (Ladybug and Hawkmoth in Chat Blanc, Monarch in Season 5) usually get dusted.