It’s always going to be hard to accurately estimate who’s paid in #btc it’s possible you could find out roughly how many people work in bitcoin and then make some assumptions, but it would always be literally a best guess.  
Am I right in thinking 2m people use BTC and there’s around 40k merchants.  To coin a phrase “we’re so early” is just about landing on me after hearing about some of the mass adoption strategies of some of the biggest corporations in the market. 
I haven’t read the rest of your note yet.  I will later though 🫂💜