Everything you have said is definitively correct and made for genuinely interesting reading - thank you - but most people (I’m standing by that description) who adjust their suspension simply aren’t fussed. Their choice of upgrade is primarily aesthetic, not functional. Those who are fussed may choose to read up and sort things properly in the way you describe but probably don’t have the tuned senses necessary to notice sufficient difference to perceive the need and so choose to leave things slightly compromised.
Those who are interested will certainly find your original post highly valuable.