I find the worst actors to be the ones that try and fill with you with so much cynicism and mistrust that the "authentic humans" feel debased and consequently second-guess themselves.
It's a fascinating and disturbing phenomenon. FWIW, here's a
discussion/interview I had with a psychologist [0] about why, for
exmaple, some people will say "Privacy is dead. Give up hope. There's
nothing you can do..." yada yada...
And the less they know about the subject technically, the more
insistent and outspoken they are on the matter. It's bugged me for
ages what's behind this, because there's more than Dunning-Kruger
going on.
She names a possible root as "conflict avoidance".
The most vocal denouncers are in fact the most frightened. What they
don't want to face is that they might have to do something, because
that could be dangerous in their minds.