What legitimate reasons are there to use Fuchsia instead of Linux? The only reason I can think of at all is to be allowed to make proprietary modifications to it.
"The Zircon system fully isolates processes by default, and must explicitly grant capabilities and resources. Fuchsia passes capabilities and resources by handles rather than name, which leads to a system that only grants software access to what it needs."
https://fuchsia.dev/fuchsia-src/concepts/principles/secure?h...