Those that are for it are either ignorant to what'll happen, don't care about the repercussions, want it for personal gain, or just oblivious to everything.
There are just some things that shouldn't be allowed. What's stopping me from writing a bs guide and putting in the thread 'NO REDUNDS!!!'?
Users will get mad about my guide stating that it's either common knowledge or not worth it. I'll have their posts and negative fb removed while I continue selling a bs guide and profiting from it. I mean, hey. It's allowed, right?
Also, I can help users with their homework. I can get them all F's and put in my ToS that I'm helping you but not guaranteeing any specific grade. I can sound smart all I want and not know one question and fake everything. The person will believe me enough and get a F when he turns it in to the teacher.
It's just not worth it. Too much wasted time and a lot of bs to go through.