I've looked at a few of those and I still don't understand. Also, hilariously, several of them are already broken. (Like the table one that's not updating.)
EDIT: Sorry, nevermind. The Bulk Edit example does work, I think it either does not like Safari, or something failed to load before, but it works in Chrome.
if you can, try to give the idea some time: it's a bit different than other approaches, but it's at least an interesting alternative to other front end libraries, even if it isn't right for everything