It’s always the climbers, the middling intellect crowd that play the petty dominance and status games in a large organization, believe that their advancement is enabled by unwavering confidence. I say they keep rising but there’s a limit—they generally end up at the top of the peon pyramid but never ascend to the very highest leadership roles. But, unfortunately, I still have to deal with them.
* Option A (bad choice for company) has some angle upside for them, such as something they can credit to themselves or that increases their status, but option B (the best choice for the company) would be owned by one of their rivals.
* Loss of face, such the best option for the company would too clearly expose and reverse a mistake they made (when they and/or the org doesn't believe in acknowledging mistakes).
* (Speculating about some weirder ones) They are all about confidence projection, as you say, and further, they've come to believe their own BS. (Maybe this falls under the psych quirks I mentioned earlier.)
So the confidence in ChatGPT, or in anything else, might not be irrational or misinformed, but merely part of their internal sales act for selfish advantage.
Fortunately, I haven't run into any of these problems a lot, but have enough experience to know they can happen. Today, I would recognize some BS quickly, and move to confirm and correct it, and probably leave if there was too much uncorrected BS.