Earlier quoted context omitted.
This is the difference between developers and designers. And why so few designers participate in open-source. I'll never understand designers. I don't mean that as a criticism, I literally don't understand the mindset. This is my problem for not understanding.
You don't get that something proprietary was stolen and the creators are upset? From a software perspective you can't imagine how you'd feel if a critical piece of your business software was reversed engineered and copied by a competitor? An example might be finance and low latency trading. Or an ML / AI breakthrough. Or anything on the fringe still providing a competitive advantage and not a solved problem on Github…
Definitely, could definitely understand if it was about money/business. But that is never mentioned when designers get angry about their designs being stolen.
I think it's not about money/business. I think it's a different mindset where a "stolen" design devalues your own contribution. A developer who makes a breakthrough never feels like their contribution is devalued if someone else copies your idea; quite the opposite, copies validates that you made a genuine breakthrough.