Be careful in using what a fifth century saint taught for today.
Usually, the writings are taken out of the cultural and historical context from which the saint spoke.
The priest in the video are at a reception.
Is it for their ordination ? We don’t know other than what the author of the article says.
Either way, they did nothing wrong and being a Christian doesn’t mean we’re to be stoic statues like birdbath St Anthony
Being fully human, fully alive is part of holiness.
Jim