How does it harm you if someone tries to increase diversity?
LLVM is a big project; there’s surely enough space for different people.
Some people will focus on the technical bits; others will focus on legal issues, and others can focus on social issues.
What’s the problem with that? Why do so many people become defensive when a project adopts a code of conduct?
If you really only care about building a great project with smart people, why do you care about the code of conduct? Just carry on with your work!
If the code of conduct actually gets in the way of working, please speak up, but that doesn’t seem to be the case here.