Agreed, and I still prefer Moo for my own projects because of how it extends javascript instead of replacing it (like jquery does).

Back when I was learning javascript (2006/2007) it seemed like Mootools was for people who had a good grasp on the language and wanted more from it. I appreciated this, and still think it's better at this than jquery.

I wish Moo had gotten more attention over the years. I get why jquery has done so well, but I don't like its methods.