Hell no he isn't. Building a car is far more complicated than you seem able to comprehend. Gunner is barely capable of fixing a car starter... even with lots of help. Your idea that he, or "most" of RCM could build a car is ridiculous and indefensible. It's far more likely to be true that the majority, having spent so much time typing out political horseshit, would need to hire out the most basic vehicle maintenance, and probably defer some regular bathing.
I've built some serious things and I can tell you a fact: people who come along during the process to ask what's taking so long never have a clue about what's involved, and seldom accept the logical explanation no matter how clear and obvious it is.
Then there's a huge money making opportunity for you. Get together with all the self proclaimed experts of RCM and build whatever you think is superior. You only need a single prototype and it needn't be complete but merely proof of concept. If it's superior then investment will flow like water. If all you do is keep talking then sensible readers will know exactly how confident you really are in your opinions. But before you waste any time, let me clue you in. I am one of the many people whose money you'd need to attract. And I wouldn't invest a dime based on anything I've read in RCM about vehicle design, or based on any of the talent claimed by RCM posters.
If you want to do something that's possible and stands a chance of making something less than minimum wage, then here's my serious suggestion: write up a proposal for RCM members to build a car cooperatively based on members' claimed talents. Email the plan to members, and post the excuses on a website. That's something I might pay a buck to read.