I do not think there are many Protestants left who hate Catholics, the reason is that the typical Novus Ordo catholic is no different than any Protestant, the Novus Ordo "mass" is the same as the Lutheran or Anglican service, Catholics show nothing that would be a rebuke to Protestants as they were before Vatican II.
Protestants no longer think Catholics are different than them. Protestants all disagree with each other on practically every word in the bible, each Protestant is his own pope and church of one. Today they consider Catholics are just like them, another opinion on some subjects.