I was, as a gaijin (a term that doesn't offend me), somewhat surprised to find, upon reading the forum terms, that to abbreviate 'Japanese' results in a ban. I have never considered this to be offensive or racist in itself, any more than I consider 'Brit' to be. I had always regarded both as no more than a convenient contraction. However, it appears to be on a par with the notorious N-word. I accept that I might be a cultural dinosaur
It's all very confusing as reducing it to a single letter seems OK, e.g. J-rock. Is shortening the word always considered racist and offensive?