[VyseofArcadia]

I have seen this attitude on HN before, and it really confuses me.

You know what an OS is, right? You can't just say, "the browser window is the only window" and say that "is" the OS. At some point some native code is going to need to send bits back and forth between hardware. You will need to provide a filesystem, you will need to provide device drivers, you will need to provide a windowing system, etc etc.

By the time you get from NAND to usable browser, you will have build an OS. Sure, I guess you could throw in a JS runtime and insist all user level software is in node/HTML/CSS, but there is still an OS underneath all that! (And the OS isn't why it's slow anyway.) There is so, so much more to computers than running JS and rendering HTML and CSS.