When I say they're mostly good, but we should fix what's broken and people start hitting me with examples of broken regulation I can only interpret that as an example for why environmental regulation should be opposed by default. So I respond accordingly.

I've never said all environmental regulation is good. That would be stupid, but you should have evidence based reasons for wanting to repeal or modify a regulation.

Existing regulation was put in place for a reason and those reasons likely still matter. Even if the regulation is falling short of having unintended consequences.