What? I think people think "rust without unsafe" eliminates certain classes of bugs. Are we really going to imply that people don't understand that "unsafe" labeled code is ... uh.. possibly unsafe? I don't believe that these mythical "naive" people exist who think code explicitly labelled unsafe is still safe.
I think part of the problem is people start thinking that unsafe code with a SAFETY comment nearby is probably safe.
Then the safety comment can easily bias the reader into believing that the author has fully understood the problem and all edge cases.
I think the problem lies with the fact that you cannot write kernel code without relying on unsafe blocks of code.
So arguably both camps are correct. Those who advocate Rust rewrites, and those who are against it too.