> I find it funny that now fuzzers are being written in rust, as if that translates to better quality bugs being found.

I can't find any such claim in the article. It says the tools are written in Rust and Python. I don't see any claims that fuzzing with a Rust-based fuzzer produces "better quality bugs". That seems to be your own assumptions projected on to the authors?

It's more likely that the authors wrote the tools in languages they're comfortable working with. It's not surprising that security researchers would be familiar with writing Rust.