It's on Github. That means you could fix that and send a pull request to the developer (which is consructive) instead of making a "constructive criticsm".
Contributing to open source comes in many flavours. Bug reporting is one of them. I simply don't have the motivation to contribute more than this to a project which doesn't personally interest me. Instead of throwing the little I do give back in my face, why not make use of it?
> I simply don't have the motivation to contribute more than this to a project which doesn't personally interest me
Creating an issue wouldn't have taken much more effort. I think your tone is what most people are having a problem with. Re-read your comment, and imagine that it's someone commenting on one of your projects.
Had you changed your tone, submitted an issue, or as farslan suggested you could have taken an extra 5 minutes and submitted the changes yourself. If you had done that you would be a contributor to a great project, but unfortunately now you're just an ass.
