Do c++ regulars eventually just get numb to how hideous the :: syntax is to look at?
Whether :: specifically is the best choice of such an operator is another question. But there aren't exactly many options left, and this one is firmly established by now, even outside of C++.
Julia is the only modern language with beautiful syntax. I think we should pay more attention to the aesthetics of a language just like we do with spoken languages. Certain languages just sound beautiful - Japanese and French.
C++ is old but Rust could have paid more attention to subjective aspects of a language.
You've managed to pick the two languages whose sound irritates me the most, which I think illustrates the fragility of this kind of thinking perfectly.