Oh brother. As if other cultures and religions have access to zero truth or reality? At least the Muslims didn't turn against their own tradition. These people are a sure sign that the history of man includes knowledge and belief in a flat earth.
You have a double standard. You have condemned globe-earthers for sharing beliefs with non-Catholics, like pagans and secular humanists. You have used it as evidence that we were wrong and did not care about being Catholic.
So, if I say that believing in flat earth does not make you a Muslim, will you admit that my belief in a spherical earth does not make me a pagan or a secular humanist?