The reason boxers use the bladed stance is because they don't have to worry about takedowns or crashing into people.
Perhaps this is again semantics, and bladed means something different to you than to me.
I have boxed (not well) and I have wrestled (better, but many moons ago). I presume you'd agree that
wrestlers need to worry about take downs and being crashed into. Even though you say boxers don't have to worry about that, the stance was similar: one foot forward, one back, hips (because of that) slightly turned, feet a bit more than hip-wide, weight centered. (By the way, I have been crashed into and head-butted as a boxer; so I did worry about it.)
Wrestling is IMO particularly relevant regarding gun grabs: I wanted to keep his arms away, not let him establish good holds, and yet be mobile. Yet, I did not linebacker pose (most of the time; the stance changes).
Linebackers have to deal with an entire field, and pursue a target who's trying to avoid them. Wrestlers and boxers work in a smaller space, and deal with an attacker who's coming at them specifically.
I also play soccer. Defense. There, I often use a bladed stance to "direct" the attacker: as I intercept him, I want to force him to "choose" to advance (avoid me) on the side I prefer: away from the center, or toward another defender.
Similarly, if an attacker comes at me, I want to direct him, so he has more access to my non-gun hip and arm, and less to my gun side. YMMV
appear to be set enough in your ways
I guess, if I prefer what I have been trained to do and practiced for many years over the advice of a well-meaning person who hasn't actually seen me, but still thinks I should change--if that is "set in my ways," well, guilty again.
You do want you want. I've got me preferences, even though you label them "misconceptions."
it telegraphs "gun" and screams "cop,"
If the attacker is testing me, just the fact that I've noticed him will often cause him to pick an easier target. If he's "sharp" enough to mistake me for a cop because I shifted my stance--maybe that misimpression will deter him further? Sounds like an advantage.
Perhaps your point is that if I instead get into "linebacker pose," he will assume I'm an unarmed MMA fighter, and run away screaming?
But I suggest that if you do reply you provide some decent backing for your statements...
Condescending, it seems to me, that you feel giving me this "advice," is both necessary and your place. I wonder if next you will pass judgment on whether my "backing" above was "decent" enough...