> making tools for more convenient work with C/C++ projects on Rust (as Python) is a more useful thing than trying to replace an already working dav1d solution (or any FOSS infrastructure) that has been tested by time, many contributors and most vulnerabilities have been closed. New projects will also have performance and vulnerability issues. No need to waste your time writing another bike, there are much more useful things.

This is their rationale, which you might disagree with, but I can’t notice any “vitriol” you’re talking about. Other people might have different opinions than yours about their favourite language, and that’s fine.