At least at the end he says he loves them all and wants there to be an end to division.
Too many families (and societies currently) completely break apart out of ego and stubbornness.
Grandpa is having a big old moan (semi-publicly unfortunately) about differences in values. But he is concluding with love and longing for togetherness, which is exactly what is needed to transcend the beef and intolerance.
I was expecting to dogpile this but actually I see the redemption in it.