This Is Why Uncle Is So Much More Grouchier In RDR 1, He’s Had Enough Of John’s Sh*t - RDR

It explains a lot, that after 4 years of more than likely endless insults and threats, uncle has just had enough and can’t find his old jolly self anymore. Either that or he’s just like every other boomer and after a certain age they are just too unpleasant to even be around