Actually it is a completely accurate statement, If prots did understand they would be Catholics.
Just presume they aren't capable of understanding something and it explains why they are wrong about everything.
Not everything, just those things that contradict the Catholic Church. Remember EVERYTHING good and true that prots know about God has come from the Catholic Church.
1 Corinthians 2:12 What we have received is not the spirit of the world, but the Spirit who is from God, so that we may understand what God has freely given us.
Trying to take credit away from God is not going to turn out well for Catholics.
1 John 2:27 As for you, the anointing you received from him remains in you, and you do not need anyone to teach you. But as his anointing teaches you about all things and as that anointing is real, not counterfeit--just as it has taught you, remain in him.
Evidently Catholics disagree with the Holy Spirit.
Acts 17:11 These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
Could you show where the assumption of Mary is taught by the apostles in scripture?