I never understood why people want to use browser technologies for the internet of things.
I think it's just unfamiliarity with anything else, and unawareness of the staggering complexity this introduces. Also, this is Mozilla who have a large concentration of people familiar with browser technologies. On the other hand, I think IoTs with web interfaces aren't a bad idea.
That's a good point. And running node.js on an IoT device still makes sense to me, but emulating a browser just seems unnecessary.