Spoke with a trad priest recently about why there are so few young marriages....family interference was the #1 problem. Meaning the parents thought the prospective groom or bride wasn't "good enough" or "Catholic enough" for their precious child. Most notably was a pre-occupation with whether or not the prospective groom was a "pedophile".
Bingo.You hit on a really crucial point here.
Talking even within the resistance, there is a HUGE gulf of opinion between the opinion of priests and parents on this issue. The priests know Catholic history, teaching, etc. etc. They are the ones who do marriage prep after all. Almost ALL of them have no issues with age gaps.
The parents however are the opposite. I have struggled to meet parents within the resistance who are ok with it. Even when they are, then the next issue is whether their daughters are ok with it. Usually once they have cellphones, they're toast anyway. But hey, me even saying that, is being a "predator" right?
One resistance priest described this as worldliness to me. He's totally right.