>>19248838They all did, especially Tyson who was a huge wrestling fan.
You wear it out to a fight, otherwise you carried it like this. Wearing it in some way when not fighting became a thing at the same time carrying it in different ways did, which also aligns with almost anyone being able to get a belt. Wearing the belt at all times or at least hanging it over your shoulder was cemented as the norm during Cena's run which was a carryon from Hogan's era.