How come Hitler is an offensive name while it’s a surname of some German people. Adolf Hitler is not the only person who use this surname and also it’s not an offensive name imho unless some name for example “holocaust is good” or some sort that directly make fun of the tragedy.
Also this forum is an anonymous forum which means anyone can choose their name even with name “ littledicky” is allowed

Don’t use public forum if you are easy to be offended or else you are entering voluntarily on living hell since there’s a lot of uncensored words here.

Really? It's a surname of the German people? When was the last time that you've heard of a person that's got that last name? Pretty sure that no one's going to be associating themselves to the Hitler family name if they can you know. @nutildah already stated that it's never been in use for like 75 years and if I recall, the relatives of Hitler have all changed their surnames because they don't want to be associated with Hitler and they did it as a way to atone for the sins in proxy.