Sola Scriptura

This is great, isn't it?

Religion starts with the idea that it already knows everything, and that ancient myths can't possibly be wrong. Therefore, the investigation of reality is always a threat to them.

If that investigation backs up what they already believe, it's unnecessary. And if it doesn't, as is almost always the case, it must be ignored, suppressed, denied, or rationalized away - usually in that order.

This is the problem with faith-based thinking, and that applies as much to the Catholic Church - indeed, to all religion - as to Protestant denominations. (Indeed, the Protestant Reformation led to the end of the Dark Ages, although that was not because it was any less faith-based, but just because it broke the monopoly power of the Catholic Church.)