If the aspirant doesn't like it, he can leave. Most squads don't take aspirants anyway, the default is level 7. Also it would likely be difficult from a programming standpoint that a person could only edit certain aspects of a name. Either you get edit rights or not.
Again, most, and I must emphasize MOST, squad morafs are responsible and wouldn't change names of folks in their squad in a demeaning or derogatory way. I cannot imagine Ace Girl, Mbzerk, Baron Rojo, ZebraUp, Luke Skystalker, CCRider, or any other actual squad moraf changing squad members name in a bad way.
You are likely gun shy since you were smacked a time or two with the moderator stick