People who complain about not being able to find the kind of fic they want in a way that suggests they think it is somehow a problem with other people. "Why don't people write gen/my kinks/my OTP??" Um, because they don't feel like it? It's free online fanfic, not the WPA Writers Project or the BBC or some other tax/fee-supported thing. Fic authors do not have to satisfy everyone and no one has to defend why they aren't writing what you want, and it's not a question of skill.

Same with people being convinced there must be lots of the fic they want out there and it's the archive's fault they can't find it. I'm sure there's fic that gets catalogued improperly (which is the writer's fault), but if there were really that much of it, some of it would get through to you. I've been reading fanfic online since before ff.net existed, when it was fandom-specific archives and personal websites with no tagging systems or drop-down menus. I still found fic to read - not always fic with every damn check box satisfied, but I still had fic to read. Most likely, if you can't find the kind of fic you want, then there is very little of the fic you seek out there and you would not be satisfied even if you knew you had tracked down every last story in existence.