What benefit would it have if you did? Would you get some satisfaction out of it? Would there be a point other than you can?
The deal is that Philip is responsible for the site and as such, legally responsible for the content. I do not agree with lots of what RS is doing right now, but the content that may be deemed offensive, whether you think so or not, is Philip's responsibility. That the words "Japs" and "Nazis" are deemed contextually offensive or a liability risk is not at all unusual. Is it correct? Nope, not necessarily, but hey, run your own site, make your own rules. When the Japanese veterans society lawyer sends you a letter regarding the "harmful content" of your site, you can take the risk associated with your decision. Similarly when the Jewish community gets up in arms (or the non-Nazi German community is offended) you can bear the brunt of their anger.
Are those events happening? Nope, I seriously doubt it, but in the litigenous US they easily could. The point is not what you find offensive, it's what the site owner finds offensive. Try the same stunts at boards you remain fond of and see how long your behaviour is tolerated.
That said, I'm not much of a fan of RS and haven't been for quite a while. It's been far too juvenile for this old man for too long. It's sad, but I've never seen the point of pouring gasoline on an open flame.