To answer your question, although I would certainly have preferred you to phrase your comments less insultingly: this project would otherwise never have got to a state where it could find bugs. I am not paid to write this code, and it would have taken far more years than I would have been willing to spend.

It's not actually unheard of for people to pay other entities to build their passion projects. For example, I visited [Eltham Palace](https://en.wikipedia.org/wiki/Eltham_Palace) last weekend, which was not in fact built entirely by the two Courthaulds who commissioned it.

because some software engineers enjoy shipping usable software more than writing the code needed to do so?