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.
It is really that simple, those using their time in this kind of activity are not really think things through, as they would better off just using that time looking for a regular job than spending their time doing this.
As even if they could manage to get an amount of coins that was considerable after a long time of doing this, there is no way for them to know if by the time they want to make a withdrawal the coin will still hold any value.