Your personal test for someone making a technical claim on one matter is to ask them a technical question on another thing that they have not claimed any expertise in. If they guess and guess wrong you ignore their claims on the thing they supposedly know something about because.. points I guess.
Hey, I do a lot of crazy stuff myself, so not exactly blaming you but I don't think your "flooding == really sad" claim holds up here, because of the crazy.
It’s not how the discussion generally happens. If they are adamant that this is truth, then they are bad scientists; if they say they don’t know, of course they’re good scientists.
But it goes together: Global warming, wage gap, and the 3 other topics that shall not be named, they’re wrong on all five together for the same scientific reasons with any ability to open the discussion to being wrong.
Which makes that, global warming is, to my knowledge, only a statement by people who believe other scientific falsehoods.