From what I have ready the issue is as follows:

Rust is a memory safe language, because of this Rust enthusiast have been pushing for it. Not a problem there.

The issue is that some have taken it to an extreme, evangelical level where they expect name dropping Rust should open every door and blindly accept every PR

In reality, Rust rewrites can (and have) introduced bugs because you can make shitty code even with the best languages out there