Whoever compiled the information for this article badly needs a hobby. So they point out that, in addition to bland droning generic Protestants, Jews, Hindus, Catholics, Unitarian get skewered too. As do deliquents, habitual criminals, old maids, public education in general and in detail, fat stupid donut-eating cops and their subnormal kids...
Yeah, The Simpsons is clearly out to get someone, maybe everyone.