As someone who has used uglify on occasion, sometimes you pull a trick and you don't want the competition to find out too easily. Make'm sweat for it.

And on the subject of Web Assembly, if asm.js is the inspiration, great thing will come for it, really a new era for the web. For example, things like that https://github.com/audiocogs/ogg.js, and to me that's just a tiny glimpse on what the possibilities will become.