Is St. Patrick's Day a Holiday Celebrating Religious Colonialism?

[InbetweenDreams]

I celebrate the idea that St. Patrick survived enslavement related trauma and yet returned to Ireland with intent to share his belief and Christianity with the people and land where he'd been a victim, became a survivor and then a thriver.

Seems the articles I looked at didn't go into much detail about Maewyn, so perhaps there is more to the story about the conversion to Christianity in Ireland?