> I didn't see C++ users jumping into Rust threads posting attacks
There absolutely are, and have been. You could say it's a reaction. I don't want to argue about who started it.
I agree with you that if the Rust community has gained such a peculiar reputation, it's also due to valid reasons.
From the outside looking in most of the push back against rust seems to be of the "I am too old, never make mistakes, and don't want to learn a new thing late in my career" variety.
I have rarely seen an argument that pushes back against Rust with actual alternative solutions to the problems the rust proponents are trying to solve. It is mostly a bunch of old people letting the perfect be the enemy of the good.
I think you got your last sentence backwards. Because reading it literally, you mean what we have now is perfect. If that's the case, switching to Rust is a waste of time.
No, it makes sense to me. Perfect is not what we have now (as evident to everybody outside of the "skill issue" denialists) but how C/C++ or a new language could get up to par with Rust with some enhancement, and without the latter's idiosyncrasies.