Careful. Loanwords into Japanese are transliterated into a fixed syllabary, that can then be transliterated back in a standard way.

i.e. that's an authentic transcription of a (borrowed) Japanese word, not a rude impression of a Japanese person mangling English.

In this case, they were quoting the article, but what about the spelling was Orientalist?

The only thing I could see would be the use of the pseudo-anglicism instead of the English phrase, but that just seems to be specifying the specific word that amused them, not exaggerating the English phrase we would associate with it for effect.