That’s because as much as they deny following men, they do.
You can tell by their actions. They are always referring to what someone else did and thinking that it will have an impact on our individual lives.
Well, that would be the case if we followed men instead of Christ, but since we follow Christ, we recognize that each man answers to God and we do not stand and fall based on other’s actions.
Unless they get out of that mindset they will never understand. If they only understood that it has no affect on us what "Protestants do or believe" they would understand that trotting out those old memes is worthless.