Well quick gains can happen, just that instead of relying on the project, you're relying more on luck. While I do agree that it often leads to just losing all your money, some people can just manage to hit those kinds of things every once in a while. Not to mention that as long as you know how to look at the obvious scammy ones (which has no guarantee) vs ones that can give you profit (even if it's only in the short term), I reckon it can be a pretty good strategy.

Personally I think the same, but that's mostly because I suck at short term projects, always overextending my stay leading to a loss instead of a gain.