Everything you said is totally true, which is why the SEC will block it. The most they could do is set aside 10% of the shares and let users proxy vote them, but I don't think that using them to back a cryptocurrency is going to fly with the SEC. I know a lot of people like Bitcoin because it's magical internet money with no rules, but financial markets are regulated for a reason.
I don't think the SEC would have a problem with the method (using a cryptocurrency) but rather the reason (using a cryptocurrency to avoid SEC IPO/ownership rules). If Reddit were public, I don't see a problem with using their stock to back a cryptocurrency. But it's a loophole big enough to drive a truck through, so the SEC needs to close it before the con men descend.
I don't think the SEC would have a problem with the method (using a cryptocurrency) but rather the reason (using a cryptocurrency to avoid SEC IPO/ownership rules). If Reddit were public, I don't see a problem with using their stock to back a cryptocurrency. But it's a loophole big enough to drive a truck through, so the SEC needs to close it before the con men descend.