its not so much that id disagree with anything you said if the economics of independent music weren't such that folks doing those shows seldom have these things in basements and coop spaces. its definitely a different skillset to cultivate existing in that universe
makes you thankful for shitty monitors when you DO get them, even though all i ever ask for is vocals and kick drum
in all honesty though, most of my banding experiences have been drilled through constant practice and reinforced via visual signals despite REALLY loud stage volume because of a super loud drummer. not always optimal, but totally negotiable. great for two guitar players working off each other? no. wed always get to recording and go 'OH you play THAT? '

(partially kidding.. but only partially). gestalt rock. :lol: