Well you are right in that they quite understand basic logic. If you can find one that does though, just show them a chart like this: https://www.climate.gov/media/15021 The global temperature has gone up under every administration except Trumps & maybe Nixon's. There is no way they use the time lag argument, I did try it in a long argument with an long lost friend but to no avail. She just wrote back "when did you go all Qanon" (I didn't use any Q references.) I just used simple logic but I guess that doesn't work for them :

(My favorite line was: even if you don't care about human life you have to consider the climate effects of so much war) because Trump has been the most peaceful president in 40 years). It was all just a waste of time to write it though. I do hope Q has a way to undo their brainwashing. I certainly don't know how to