I'll just comment on this part for now:
But we ... are pioneers of a universal basic income....
I think, if anything, Mustachianism refutes the idea of a universal basic income. We have shown the world (as others have before us) that one needs relatively little money to live a good life, but meanwhile all of us have earned our degree of FIRE by providing value to others, and learning how not to waste our accumulated capital by investing it in non-value-adding activities.
Take a look at social security. It acts as a universal basic income for elderly people who have worked their entire lives and spent every penny they earned; I posit this as being acceptable, because there is little of value that they are still capable of adding to society*. Now imagine extending that privilege to those who have never earned a cent in their lives; will this remove too much incentive to create value, especially for those who are beginning to learn the concept of providing value to others at a very young age?
Keep in mind a universal basic income would not prevent people from going into debt until they owe interest equal to every penny they get from a universal basic income and more. Then, that universal basic income wouldn't be enough to live off any more (and for many it would never be enough). This would likely lead to the demand for a higher income, and many congressional representatives will get elected by whoever promises to increase the income to meet the "needs" of the people (similar to the social security and medicare debacles).
So, I would say no, we are not pioneers of a universal basic income. I'm not sure what sound bite I would use to try to describe us. Perhaps, we are a grassroots movement that uses the economic model of capitalism to maximize sustainability rather than consumption.
*ETA: This part came out wrong. I should have been more explicit that those most in need of some income will have the hardest time trading their labor for money, because as a senior your body is beginning to break down. So from an economic viewpoint, seniors in need of money will find very few avenues to provide value (not that they don't provide value in other ways).