I wouldn’t worry about that person. They’re a white knight.
When you create a name in game, it’s typically assumed you will be able to back out and delete that named thing somehow. When you delete a character, you expect for the name to be released and for the character to be removed. There are some games that actually do not release the name after that happens – that’s an exception to the norm.
In ToS, you make a team. You would think there would be a way to delete your team and release the name. NOPE. Not only can you not do that, but your ToS account is your Steam account, basically.
While I totally do understand the charm in not using a handle system (I hate random numbers and whatnot as much as the next person (ex. CloudStrife@FatBlobsOfChickenFat.9138)) the information, or lack thereof, regarding this team naming system was all over the place and totally inconsistent.
It was not done well at all.