(I also don’t see Linux developers flocking to it in droves, which is sad because it is a lot cleaner and easier to use than Gnome and KDE, IMHO, but then again Linux has always been more about diverging choices than unity—and I don’t mean the desktop environment here).
The only thing Elementary needs to do is allow for disabling all animations, to get rid of the perceived latency issues some folk complain about...
But I digress. It isn’t an OS, and you get all the Linux legacy underneath, so it’s understandable that Fuchsia is happening. Google seems to be attempting to lay a new foundation here, and I think it’s actually a good idea to do so, although the number of third-party packages and run times they’re bringing in makes it hard to peg it as “legacy-free”.
Time will tell, I guess.