Just because the Pope says something stupid doesn’t mean it isn’t the One True Church created by Christ himself. There have been terrible Popes yet one church stands as the only one that hasn’t allowed divorce, abortion, artificial contraception, female priests, and so on.
Again, the Popes words on Muslims is not binding on Catholics as it’s not a matter of faith and morals.
If you want to pretend orthodoxy or Protestantism is real Christianity and not heresy then keep pretending.
Most likely you just want to keep sinning against God.