Sure that's fine. I'm not saying that's your position. Shortened words I agree don't usually have any negative intent. But I don't really think it matters. Once a word has been deemed offensive that's that. Etymology doesn't really matter. Regardless stupid to get worked up over it, either someone is intentionally trying to rule you up or they aren't. If you get riled up you're either overreacting to nothing or you are giving the person exactly what they want. Logic dictates you should just not respond to insults.

Jap short for Japanese in the same vein as Brit is short for British? Sure that's fine. Kraut you can probably say with no repurcussions despite that being a slur. Similar to Jap really in that it was used back in the war a lot. But none of this outrage stuff is logical. There's no rules or rhyme and reason behind it beyond what society deems to be offensive. I'm all for ignoring the stupid rules of polite society when it behooves me. Just saying that's move you have to be careful with. Lots of stupid shit I think is bullshit I put up with because it's not worth the consequences of fighting it. Save my energy for the important shit.

Anyway you can't say Jap in the states especially out west without a bunch of people getting offended. Granted you can't say a lot of shit in the states without offending some puritain curmudgeon. I've been told off by old ladies for saying "oh man that sucks" because apparently it's homophobic or some shit like that.