Tbf Jamie apparently also acted a bit differently off camera according to several of the cast members, I've seen them say that while Adam was usually the rash and reckless one on camera it was usually Jamie who made a lot of reckless decisions behind the scenes. We don't really know the whole story of their relationship really and Jamie doesn't have any interest in talking about it anyway these days

From one perspective I can see how Adam would honestly say he never "meant it like that", but he does seem a little stubborn and boomerish in that aging gen-x sort of way that tends to miss the point.

I feel like Jamie and Adam are both like the fun uncle who can be too much, but you don't ever get too annoyed with, in very different ways.