Yes, you seem to be one of the few who isn't offended by joking at how people behave on the NYC subway. The Arabic thing was a dig at the people who irrationally fear Muslims, not Muslims themselves (as if that wasn't obvious.)
Of course, it's always easier to twist and contort statements involving racial stereotypes to paint the person posting them as a racist, than try to actually get the joke, so I expected that to happen.
