Why would his mind change....Catholicism IS Christianity....those who wish to protest are.....Protestants....nothing wrong with that...they are the protesters against the truth....
Simply because there are many non-catholic Christians who are not in Protestant denominations, that’s why. Are you familiar with NONDENOMINATIONAL churches? I guess using your logic, even Eastern Orthodox Christians are Protestants, too?
It appears your HIGHMARKS are starting to make you forgetful.
These guys - http://en.wikipedia.org/wiki/The_Bad_Popes - and their wonderful illustrations of how the highest levels of Catholic teaching had been SO effective; are the TRUTH that had been protested against.