I am really fed up with this kind of indie hacker story. MMR updates are superficial. Weak signal. I'm confident most are absent of critical info and some are entirely made up. I don't disbelieve anyone in particular, but when a mechanism of virality proliferates, it often gets deployed without the backing substance. "How I XYZ" around money is similarly misleading. Most entrepreneurs I know cannot recreate their own…
I think your ingrained views around money and greed are preventing you from presenting a fair perspective. The author has something like 4 successful products, so the problem around reproducibility is... irrelevant.
And the idea of great entrepreneurs not being motivated by money... I mean, ok, maybe give some evidence. I think you'll find many people have 2 reasons for doing something, the nice "non-greedy" one they tell everyone and some seem to take a face value, and the underlying one.