I was also very much not a fan of what they showcased in this regard - as others have said, signature Larian in all the worst ways, without showing any understanding of nuance or moderation.

If a paladin makes a poor choice, or goes against their oath, that becomes a matter that is between them and the source of their divine power - and even if they aren't serving a deity, they are still tapping divine power and it still has a source with which they can commune, even if that's a divine intermediary for a concept or a given divine folio sans deity. Immediate forsaken retribution is not at all okay, and is the hallmark of an incredibly sweaty, overbearing DM.