You’re right! That really is the only reason why these threads get posted over and over again. Some would be well advised to consider what God thinks about the one who “sows discord among brethren”. (Proverbs 6:19)
Highlighting differences between Catholics and Protestants isn’t sowing discord among the brethren because we’re not all brethren. Catholics have a different Christ and they believe a different gospel. It is utterly biblical to share the faith once delivered unto the saints with those who believe another gospel.