As for "your friend's Jewish", that's still not quite the same as yourself being Jewish, is it? That from what I've gathered, you're not?
Anyway, getting back to your quote, actually I find it to be the opposite. That generally speaking I find Jewish people to have a good attitude towards the disabled and minorities. After all, they were often perceived to be the "minority" in many countries or areas throughout history. And besides don't they tend to also vote democrat, the party that tends to be more "minority" or "disabled-friendly", in the USA?