Honestly, just my personal experience here, but amongst millennials, no one cares if you bust out the calculator app to add all your scores in a board game. It's actually superior to mental math because you can see the list of all the points you've added, if you add 20 numbers together it's nice to see them all after for verification purposes. There's no societal expectation placed on us whatsoever, it's all about getting the right answer.