Duality of old men

3 main points of grumpy old men, 1: grumpy old men and angry/rude old men are completely different, 2: grumpy old men are just men who have lived long enough, putting up with being politically correct to idiots and bad behaviour, and decide to finally say no to idiots and bad behaviour, 3: the "bad" effect of grumpy old men is just a younger politically correct person's inability to accept the truth