No. A thousand times no. Not only would an IQ test be universally loathed by the community (newbies in particular), but it wouldn't even be effective for whatever purpose it had, since as has been pointed out it's too easy for someone to grab the answers off the internet and cheat.
That's why it was an April Fool's joke, kids. Theymos might be nutty as a port-o-potty outside a peanut factory, but he's not crazy enough to implement such a time-wasting exercise as an IQ requirement for membership. Can you imagine?
No it's not going to happen. This forum is all about freedom of choice and doesn't separate people based on sex, religion, origin, or intelligence/stupidity. Bitcoin is for everyone who is tired of the traditional financial systems and those who are unbanked and can't use banks at all. Putting such labels on people wouldn't be right.
And all of that as well. The merit system is one thing--and I'm a big supporter of it, especially since most members here get paid to post, and there's a very real, very great need to limit shitposting, but thankfully Theymos is indeed pro-freedom at every turn. That's part of what makes bitcointalk such a great forum. You can speak your mind using pretty much any language you care to, and it's not going to be censored for the sake of not offending someone.
Stupid people are welcome, as are geniuses. And we've got quite a mix already.