I've only had something like that happen once, and I suggested that I had some good resources from my wife and kid, and I could hook him up. He kind of awkwardly laughed it off and said he was good.
I still don't know if he was trying to be use it as a punchline, or trying to share his condition. I certainly don't want to push people away from sharing their struggles if they are using humor to deal with a hard topic. But yeah, using it as a punch line is pretty insensitive. I've said I was being OCD as a joke about being particular about a project, and I totally could have hurt someone's feelings who actually struggles with a real condition, and that kind of sucks.
It is bad. But its sooooo on fucking brand. If there isn't some "respected body" to suggest what you did is bad, then you did nothing wrong. He doesn't hate climate science past it stops him from doing what he wants. But if you can frame it in a way that motivates people against him (less fisheries means less sport fishing, less wild areas means less hunting, no snap benefits means more crime) you nip away at his base, and he doesnt have a ton of support. its marginal vs the voting public, even in midterms.