This was definitely badly worded, it would've come across as less bad if it was instead something like "Is there an unfair lack of emphasis given to the non-Jews killed in the Holocaust?"
But still not great. A specific word for what happened to European Jewry is clearly needed (as what happened was different and of especially grim importance for the reasons pointed out earlier) and Shoah has never really caught on.
Also, of course, it's an odd argument as it's really only the Roma who are even half-ignored. Most other persecuted groups ('even' those, such as homosexuals, who were never really subject to mass murder) have been given a great deal of attention, especially (when relevant) within their own countries.
And I somehow get the impression that sort of people who get mysteriously irritated at having to see Jews as victims are perhaps less than likely to react well to the idea of seeing Gypsies as victims either...