very good points. But can you imagine, if what you do in the real world is like selling, teaching, singing in a cafe or making song lyrics. Everything can produce crypto as long as you want to be paid with crypto as payment. I made song lyrics for some friends and I wanted to pay with crypto and he agreed. Isn't that also included as a way to earn crypto?.
This is a great way, but the problem is that there are very few people or stores that are ready to accept cryptocurrency as payment.