Pretty funny stuff. And apparently done without malice, or insult.
At least I didn’t hear any insult or derision in it; then again, I’m not Catholic. But, I guess if you are seeking an insult, you can find one anywhere.
I think no insult or derision to Catholicism, Ireland or St. Patrick is meant in the video. As far as I know, both classical Protestantism and classical Roman Catholicism hold to the same theological perspective concerning the doctrine of the Trinity.
I'm Catholic and it made me chuckle. I didn't see anything mean spirited in it.