I get your sentiment on people skipping the reasearch part and jumping to asking help but I wouldn't say everything is documented tho. Although for the few problems that I did have arch documentation was pretty nice. I myself have an bluetooth bug that I eventually gave up as I couldn't find a fix to it, that's the only post I made with this account if u want to look it up. With things constantly changing and the infinite possibilities of config, there will always be some unknown bugs or issues that no documentation can cover.