The St. Patrick motto is popular among evangelical/Protestant Christians as well as Roman Catholic Christians.
Disputes about what the Roman Catholic host actually is, won’t get solved overnight. My observation of the situation is: The Lord is not proud, He considers His own sacrifice for sin to be quite adequate, and He uses even occasions of people’s confusion to introduce Himself. God knows quite well that He won’t get perfect worship from a person until that person has been completely purified. Differences over the theology of the communion ceremony (let alone other things) are often a sore point between segments of Christendom, ending up with testy attitudes and mutual condemnations. The views involved are often sadly as though the unforgivable sin got hybridized with rabbits and is now multiplying all over.
I am of what is, perhaps, a small group of Christians who can envision the reuniting of Christendom even on earth, however I cannot say I know what all the details will be like.
Nicely stated.
We Catholics do know what it will (almost said “would”) be like.