Dude, I have a BBA in Real Estate from one of the best schools in the country and worked as a commercial appraiser in addition to knowing programming. I will admit my residential knowledge is more limited, but I do work with this stuff every day.
You also won't hear me advocating for 3.6 - it's a dumpster fire created by neck tie bureaucrats, but you are fighting against windmills by opposing data standards. And yeah, I wish we had data standards that cut across not just appraisal, but all real estate. There have been some efforts with MISMO and Appraisal Institute's Property Use Classification System (PUCS) and other which are all half-baked because they also suffer the created-by-bureaucrats issue with their own special-interests in mind.
So maybe we are actually on the same page, just talking past each other?