I have (probably always) been one of those nasty, strong advocats of native stuff, I was unhappy with NW.js, especially its mere zipping of assets (in particular since "the incident"), I have been very sceptical about the browser thing, even more about the cloud thing...
.. that said, against all odds, find myself dabbling with the beta on my linux workstation* at the office quite often. There is some benefit to this concept, this "one account and one software for everywhere". Unlike at the very beginning of the beta or the blog posts that preceded it, I'm starting to "feel it" now. And contrary to my initial brush-off reaction I'm going to do at least the first year.
* interestingly the website identifies this a "a mac" for whatever reason (it's chromium on Arch linux)