Every mainline Protestant denomination was basically founded on the idea that they shouldn’t have to listen to the Pope at all. And that was before Papal infallibility was enshrined, which actually didn’t take place until the late 1800s.

In America, anti-Catholic sentiment was extremely strong until relatively recently, and then only because religiosity (and thus the reason for it) has declined. All the theological division still exists, it’s just less striking in a world that’s much more irreligious and in countries where vastly different religions (Muslim or Hindu) are present now in real numbers.

Practically all the pro-Pope sentiment I’ve seen in my lifetime has been from various flavors of atheists, agnostics, and other areligious types. Catholics themselves generally hold more respect for the office than the person, and Protestants are almost uniformly negative on both.