like anything else, I guess its just a matter of “what we learn TO do, we learn BY doing”
in other words working the heck out of the 3-4 combo lol.
Im the opposite of the OP. it has always felt weird as heck for me to “reach up” and use 1-2-3 fingering for, say, 10,12,13 fret etc.
I think a ton of guys probably use 1-2-3 fingering because they probably played their first first years not using pinky at all