Is someone who only wants to write JavaScript really going to be coaxed to write kernel drivers in any language? Yes there is a dominant JS crowd, but I don’t really see why they should affect what developers in other areas choose.
Eh, no. Not even close.
Back in the day I wrote a personal patch for BTTV in order to support my video card with different tuner and radio settings. It was damn hard for a C newbie like me. For these people it would be a nightmare.
The point of Rust is to enable newbies to write systems software.