Yes, quit. That company has a huge bus-factor.

The world will never notice that you worked there, or that you quit. It's not important, and you won't think so later.

I agree. Work should make you feel satisfied. If your current job doesn't do that for you, find one that does.

EDIT: However, thinking about this from the opposite position; perhaps the CEO is looking for advice regarding employees who won't take instruction?

What are are making is cool, and we have the potential to get huge so I'd like to stay.

Everyone does exactly what he says, so he should have no issues with anyone not taking instruction from him.

It just sucks to leave a meeting knowing that we are doing it the wrong way and can't do anything to fix it. I want to fix it.

If the company is so successful, is it possible that in fact you are not being asked to do it the wrong way?

Point taken. Our first product was all him - and its great. Now that we are bigger and can make more products - we aren't doing them the right way.

If he's being asked to do it the wrong way, is it possible the company could be even more successful?

Yes, that seems entirely possible.