I too would not trust it worth one fart. That said, seems reasonable you and I should drink some (many) beers, eat some (many) nachos and wings, and try to definitively determine the worth of a fart–so we’re all on the same page when we use the fart as a measurement of worth. So, call me maybe?
I reckon most of them do believe their vitriol. Some number of them may be pure opportunists who seize on the culture war nonsense for personal gain but are not true believers; however, in my opinion the vast majority are not just putting on an act.