There's nothing limiting about it, you want in, you place your ad and that's that. It just so happens that that is the extent (with one notable addition whom I know personally) of real services that take part in this forum. I'm sure there are many more, whom I do not know personally, but those that are "approved" did not come there using magic.
As for the other part of your message, yes, this forum is, primarily, aimed at reducing the plague of spammers, scammers and garbage writers out there. And there's plenty of them., trust me.
If you know the site's rotten, why work there in the first place? There's heaps of other sites you could work for if you have the qualifications. You're kinda cutting the branch you're sitting on, but that's your business anyway.