"Do you volunteer to clean up the *literal* hundreds of spam posts every hour in a timely manner if I remove the validation?"
Sure I'm willing to do that if you offer it (you are basically asking for a mod), because I literally have to do this for the comment sections of my SEO blogs. I'm serious. Set me up an account with appropriate privileges and I'll do it. Huge forums like bitcointalk don't have this. They rely on recaptcha and in some cases small donations in bitcoin to setup an account (which you may consider too) as well as volunteers who act as mods.
But I find recaptcha to be effective with filtering most stuff out. Have you tried it?
Again it's not letting me pass the "1-1" question. It's my fourth attempt. It rejects me when I enter in 0, zero, 1-1=0, and null (I haven't tried nill). See what I mean? I'd rather be your forum janitor than answer such questions (again it would be less painful if it would accept my answer of 0). And I would be contributing something to make this community better.
And yes I understand my complaint made you mad (hence your edit), but this is exactly how I feel when my correct answers are being rejected. I can live with the tough captcha (I literally have to use the audio because I usually can't read at least one of the letters), but when correct answers are being rejected then it's broken and harming the community. You need a mod just like any other forum.