No one who knows anything about C uses insecure functions without having a good reason and a good foundation around them to keep them secure. The functions are there to allow C to have maximum flexibility and low-level access to a system. For the most part, these shouldn’t be used, and any decent C programmer knows that. Comparing that with Rust where people think the entire language is inherently safe and has zero awareness of what they might be doing is laughably insecure is the heart of the problem.
Been programming longer than most of you have been alive, kids. Keep on defending your hacked together tricycle language and then crying when you manage to tip it over because of your overconfidence.