That’s because protestants have had an inferiority complex for the last 500 years.
Actually that was not my quote you are responding to, while it is RCs who quite evidently seem to feel the need to constantly repeat propaganda, as if to comfort themselves that their fantasy is true.
Despite your imaginative assertion that "Catholics never belittle or challenge beliefs from protestants."
Either its an inferiority complex or narcissism: take your pick, as the propaganda certainly has been exposed as being so.
Protestantism is a false religion, teaching errors of the gospel for more than 500 years. Everyone and their brother is an “authority”. And their all right. Just ask them.