Sounds like you're projection you're personal feelings on others. Isn't it possible that some "obsessive" collectors actually enjoy that style of collecting? Is it possible that what you call 'focusing on what is wrong with everything" actually adds to their enjoyment of this hobby rather than making them hate life?
The part that I find truly mystifying is that you feel someone else's collecting style somehow spoils
your hobby (you are not the only one who has said something to that effect.)
Personally I like being around guys like intothevoid. I'm not interested in taking "screen-acuracy" to the level that they are, but it has caused my collecting style to evolve and grow. Most of my collectibles are stock, but sometimes it's fun to make tweaks and mods to figures. And that wouldn't happen without someone to point out where there could be improvements. And although I only dabble in this stuff, now I think of my hobby as more than
just collecting and definitely enjoy it more too.