Well, if you try a lot of stuff, and stop early.. You have more chance of success.. "put your eggs in one basket" kind a thing
It shouldn't be about the time spend but how quickly you can validate assumptions, those are different things.
My point is: It's not "that easy". I'm pro indie hacking, but it's hard work and difficult to create a profitable business that you can live off. Spinning off crappy quick projects only works if you have a big audience you can sell to, and most don't have that, so they will have to put in a lot more effort and time.