I mean, this... isn't surprising at all?
Blustering around confidently exploits how ... duller human brains interpret factuality.
Moneky brain see confidence?
Monkey brain know they must be correct!
This is the basis of ... well, con artists, you know, confidence artists, a whole lot of PUA type shit, uh, a whole lot of politics, a whole lot of marketing..., many debate and negotiation tactics/styles...
Being a bullshitter is a common thing because bullshitting is broadly very effective.