Can the 'move to earn model' offered by a company like Sweatcoin, of whom are willing to pay tokens to users who have either sweated using the app while running or swimming, be a micro or macro solution to economic problems, if adopted on a large scale?
It's not a solution to anything. Microearnings have always been a waste of time. Only the poorest and most desperate people do them, and still it's not worth for them. They would have been better off spending that time on developing skills that could help them earn better money - these days you can learn almost anything on the Internet.
And even thinking about macroeconomic effects of microearnings is just funny.