Yes of course. I find it strange that many educated people often lack knowledge of basic Christian theology such as the differences between Catholicism and Protestant doctrine.
It's not as if there is any tenet uniting Protestantism beyond the Pope is not the infallible leader of the Church on this Earth. Maybe a general agreement to use the Masoretic OT canon instead of the Septuagint OT canon, which is odd since the NT quotes the Septuagint in several places where it disagrees with the Masoretic.