You have as PoLR, which, among other things, means that you're not comfortable with using, or receiving, sheer authoritarian pressure, or of understanding well which fights you can pick up - of knowing when to be a bully, and when to be an ass-kisser, as types do.

My questions is this.

Do you find it plausible that an INFj raised in a family where "victory at any cost" is the chief value might shift to the extreme of using excessively, to the point of being characterized as a "mean bastard" and "ruthless" - while, of course, still remaining an INFj in all other respects, including conflict relations with ESTps? Especially as they'd be the first to see through you, as the "professionals"?

Since is your first function, you'd also be known as a "self-righteous mean bastard".

Can you see that happening?