Yeah I completely echo your experience - about 10 years ago (maybe more now) I got annoyed at how spotty the quad listings were, even for the major label releases, that I went through label by label and methodically added all the missing ones and corrected the missing ones or added the quad remix credits at the very least.
I'll admit, there was a small self-serving reason for this too - I was hoping adding some of these new listings (particularly of Q8s and Japanese CD-4s) would yield cheap marketplace listings with no buying history for the sellers to rely on in setting prices, which did happen a few times. But mainly I was just hoping (in the days before AF, D-V and now Rhino) that it would bring quad a bit more into the mainstream and give people here the ability see pictures and other info about some of the albums they'd only heard about.
I'd intended to do every label eventually, but the constant (as you note) unfriendly comments, overzealous adherence to rules, and having to justify myself to people who knew less than me on the subject completely killed my enthusiasm for the project. The final straw was getting regularly harassed by a couple of users (one of which was 'fishbulb', a guy known to some of the old-schoolers here) who were threatening to have my account suspended and were trying to make me "prove" I owned copies of specific albums by sending them pictures of me holding them and so on, like it was some kind of hostage situation. I even got a message there from Darrell Johnson, former JVC Cutting Center CD-4 mastering engineer, complaining about being similarly hounded off the site, so we're not alone in this experience.
Though it pained me as a perfectionist/completionist, gave up adding any more quad releases after that (about 75% of the way through my task) because I just came to the conclusion that life was too short to spend any more of it than an absolutely necessary arguing with idiots on the internet. I'm sure (in their own minds) they mean well, but it's like Frankenstein making the little girl's head pop off because he hugged her too tightly - these guys only care about the end result and have no consideration for the effect of the methods used to achieve it.
So now I only add and/or update D-V listings, and if I get questions, challenges or queries on those I'll defend them if necessary, but for anything else I just ignore it and tell myself that in the fullness of time the collective wisdom of crowd-sourcing will mean that these listings eventually end up correct, even if in the short term they're not 100% there because some pedant is insisting on a change (like for example, lots of them think that quad LPs are "reissues" whereas I disagree, because a quad mix is a new mix and a new product, not a reissue of a previous product) that's the rules equivalent of driving your car into a lake because your GPS told you to.