That is the current thinking. And much emotions attached. So much controversy and potential arguments. It is the fashion, though.
But the laws of physics still apply - no matter what lean you've got. It takes a certain amount of force (traction) to get you around that curve at that particular speed.
Does tipping the tire upright a few degrees change any of that? Not really. You have the same downward (gravity) force spread over a contact patch area. The tire is curved so contact patch is adjusted for the lean. And as the contact patch changes the normal force changes accordingly to provide the tangential forces. But the forces are the same.
I realize this is heretical talk and I will most likely be beaten severely. I must don my flame suit here.
But I see this from an engineering perspective (that is my background) - dynamics, coefficients of friction, force vectors, gravity vectors, normal (perpendicular) forces, tire deformations, etc.
I will not expand this discussion into an engineering analysis that would most likely be misunderstood and attacked.
It is only offered as a "what if" - for your question.
For your own wonderment, you can see some pretty amazing youtube moto riding - very twisty with some extremely competent riders that do not "hang" - they just really know how to ride - and balance!
Example:
Unreal Control On Honda CBR600RR - YouTube
Good luck with your selection. You seem to have a good grasp and appreciation of most of the aspects of riding at an early stage. Better than many.