Web as native on Firefox OS is not an argument or an illusion. Seriously, no kidding, it's the entire point for the existence of Firefox OS.

There will never be access to run native binaries on a Firefox OS device. Web APIs are as close to bare metal that it will ever expose.

Seeing that as "totally lacking any sort of real native software development support" misses the whole purpose of the OS, because the web is native on Firefox OS.