ITT entitled people, who would never pay a single cent for rsync nor ever contribute to it, having a big mouth about it.

Also the analogy is crap. It's free soup on somebody's compound that anybody can walk in and take at their own accord. People walk in, take it, build a business or dependency around it, and get pissy when the recipe changes. They don't want to take the recipe and fix it themselves, instead they demand the cook change it for them. "My customers are unhappy with the soup you make in your backyard". The cook is well in his right to tell them to fuck off.