Like half my neighbors have some part time work that results in income they need to report themselves (mostly taking care of pets or horses or cleaning houses) and the other half let RVs stay on their property for rent. I live in a rural area but it seems really strange to me that you would expect all income to come with a W2. Basically everyone I know has at least some "peer to peer" income that involves no middleman or business.

Now on the other hand I have no idea how many of those people are properly reporting their income. Some definitely do but I suspect many don't.