Echo JS 0.11.0

I really don't get this approach to CSS. How is writing "c4 co2 mx1" any good if not for saving a couple of bytes - that could be shaved off by a minifier and a good bundling system anyway?
And if you want to "atomize" CSS like that, why don't you use inline styles and call it a day?
I feel like all the possible semantic approach is lost in the process.