Back in then late '80s and '90s, many people's computing resources were stratified. You had the haves and the have-nots, and if you didn't have the memory, CPU, Internet or other resources, you couldn't do what other people could do. This, obviously, included programming.
As free and open OSes became prevalent, and as computing has become ubiquitous, pretty much anyone can attain enough computing power to participate, even on a first gen Raspberry Pi or a decade old, recycled x86.
Rust changes all of that. Rust is so ridiculously computing resource hungry that you can't even compile Rust itself on a 32 bit architecture, because there isn't enough address space. This is just ridiculous. So now we're supposed to go BACK in time and go BACK to where only certain people have the resources to compile, and everyone else is supposed to simply accept this?
Also, if Rust is so memory safe, then why aren't people taking advantage of that memory safety to be MUCH more aggressive with deallocating / reallocating memory in, say, Firefox? Why does Firefox now seem to require gigabytes of memory for basic browsing?
Rust has some good ideas, but the lock-ins to resource expense aren't exactly helping the planet.