What I know about the Fuchsia so far:
1. Google was very hush hush about it for many years.
2. They aim at no longer relying on the Linux kernel (think Microsoft ditching DOS when replacing MS-DOS and Windows 9x with Windows NT).
3. Looking at the interface in YouTube videos, Fuchsia is even more a toy than iOS is, which is way more of a toy than Android is, which is still a toy.
4. Seems like they want to lock you in a-la Apple (except with open source software instead of closed (iOS) or mixed (macOS) source), both on phones and PCs.
The only reason macOS is mixed source is because it's technically a FreeBSD distribution.
母語は日本語ですが、英語も喋れます(ry