Saying shill implies XLibre is some kind of scam he's trying to trick you into, where as, if you don't like it, you're absolutely free to not use it.

Or, what's the popular line in this scenario, "if you don't like it go make your own?"

I'm sorry.. I just find the reliable cult of software personality on HN to be a little frustrating.

For us not in the know, why is this bad?

If you often click these types of articles and they all say XLibre, then it is probably the best tool for what you want to achieve.