The developer isn't doing it for near-term income.
That's perfectly fine, I have no disagreement whatsoever. However, you are saying that only (at leasts relatively) rich people can develop coins, or they have to work for rich people who cover their living expenses. Because most non-rich people have to support themselves somehow.
I don't define the savings to pay rudimentary living expenses for a year as rich. I define that as not irresponsible. The problem in the world today is everyone lives in debt.
Also young guys shouldn't be burdening themselves with a wife and kids too early if they want to change the world. Make your mark on the world first.
If my only responsibilities were myself and I didn't have symptoms of neurological decline, I'd be hunky-dory. But I do have those other two financial risks that can blow up in my face at any time.