I don’t know you but I like you.

Courtesy costs very little.

I agree with you, but this is one of those things where if you haven't had the experience of being part of a popular open source project, you don't realize how bad the scaling effects are.

Let's say courtesy only requires five minutes of my time. There are millions of users of the programming language I work on. Let's say only 0.1% of them desire my courtesy. Even at that small fraction, I'm going to spend 83 hours out of every 24 hour day (including weekends and holidays) giving each of them that cheap courtesy.