> The standout feature of Vivo BlueOS is its utilization of the Rust programming language, marking a global first in building a system framework for an operating system.
Using rust is not a feature.
Using rust is not a feature.
Either way, general grumpiness about Rust being used to write an OS may be a reaction to the hype, but plenty of people have expressed interest in an OS written in Rust, if not for any other purpose than to challenge Rust's basic claims.
Besides, there are many many factors determining successes of OSes, often far removed from quality of the software itself (1986 AmigaOS had GUI and multitasking, and still lost to MS-DOS and Windows 3.1).
On most systems the C ABI has been the only ABI for so long that people have forgotten system ABIs are language-specific.