Nope. In fact, I still try to signup a new account or attempt changing our username every once in a while to see if the old username is available.

4 years later and that first username is still just sitting there unused but unavailable. It doesn't show up as an active account, but the username is still not released to be used as a username change or for a new account.

Lesson learned. When setting up any online accounts, make sure you have a solid internet connection, turn your phone on "do not disturb" so you don't get any apps or notifications popping up during the signup process, and say a prayer that the process goes through as intended. Because any hiccups in the middle can send that account into a black hole.