Should the `Display name` be shown instead of `Username` in the Profile window?

Should the Username (usernames circled in 2 places shown below) in the Profile show the Display name?

Username → Display name
ovari → Óvári

Perhaps the Display Name can be shown under the Informations section too?

Linux Mint 19.3 Cinnamon
Jami built on 2020-03-18 22:13:41 UTC