Partly, but also because they’re chauvinistic about their religion and think Catholics aren’t Christian. Even at their best they practice sola scriptura and disagree with Catholics on interpretation, therefore they assume Catholics don’t actually understand the bible. Meanwhile Catholics look at them confused as to how anyone can read that thing, reject all context snd traditional interpretation, and come away believing every word is literally true and that they have an unerring understanding of it, much less without the graduate degree in the topic priests need.