It's a little weird, but people are fired up and need to release that energy somehow haha
I remember when I was like 16 or so, my boy and his younger brother and older sister went to see 'Windtalkers', a hilariously bad John Woo WW2 action movie, and it was so over the top with it's patriotism and cheap sentiment and Chirtsian Slater...when the movie ended my boy, who was the funniest of all of us at the time, stood up and started slow clapping as we walked out...That killed me.