Which is not exactly the same as wanting everybody to rewrite everything in Rust, but I suppose it's the sort of thing that annoys nineteen999.
There are also a lot of devs rewriting things in Rust for their own entertainment or whatever, which I think is the main source of the "rewrite everything in Rust" meme.
There are still plenty of constrained environments, architectures not yet supported, a lack of mature libraries for 2D/3D graphics amongst other things, that make Rust not a good fit yet for many projects where C/C++ already works. When Rust gets there and it and it's community matures a bit, we will all cheer. Until then ... we'll just get back to work.