The lib author seems to be German.
Just an observation I made in the past: Some of the brightest German programmers I have ever met happily take 9-5 Jobs and rather do their project ideas as as hobbies. Might be a cultural thing?
As for your hypothesis: I can only speak for myself, but I just don't want to ruin my hobby by monetizing it. Plus, I've spent enough time with the community to know that as soon as money gets involved, people are suddenly not so kind anymore. I just like it more when people are kind and polite to each other and treat each other with respect...
