Grek0, I fully agree with what you've wrote, and have experienced it also. Without elaborating fully here, I think it comes about from an unhealthy focus on their HA Se function. In contrast I know an LIE just now IRL who is more 'humble', for want of a word. I suspect this LIE is a healthy one. I'm not sure it's too good to get overly focused on seeking functions (or PoLR for that matter), it's one of the reasons we've got duals, to assist in these things for us. We're not supermen but maybe Se 6th function when overly focused on such as in the LIE's you describe sort of makes them try to appear to be, and yes, it does seem to taint a persona/type with a lot of natural talent.

Of course with these sort of LIE's, it's just an illusion of power they create and as such they are living in a world of worrying that their bubble will burst.