
If you see something say something, that's what I do and always have no matter who the person is. If you see someone being rude to someone else politely speak up. It may not seem like it at the time but it makes a difference and things change.
You mention Rad as if he is still an active member but he got the ban hammer years ago for exactly what you are complaining about. Many other people have also gotten banned or time outs for such behavior. I'm sure it's difficult to watch and moderate everything and sometimes people just slip up. Have you ever been in a foul mood and said something in a way you shouldn't have? Members here are trying to keep people safe and the hobby moving in the right direction where some forums and youtubers often teach unsafe practices that you somehow have to persuade people to unlearn and people tend to be resistant to that and fight you so, yes sometimes you get frustrated and sometimes you might slip up and get a bit rude but sometimes it's necessary. Sometimes it's not and that's when you and others need to step up and say something.