Definitely. Insecure protocols linger on for ages even after we have better options. The internet used to run on unsecured HTTP, FTP, and Telnet, and it took decades for their encrypted successors to make headway and become the default.

I think email is the last major old protocol that’s still blatantly terrible, but it’s too deeply entrenched/too decentralized to do anything about.

My favorite related fact is that dueling scars became fashionable in late nineteenth century Germany, so students would get into illegal duels to get maimed in ways they thought made them look good.

This is also the origin of the mandatory eye or cheek scar on the “evil German” character in movies.