Physicists and mechanical engineers simply do not wield the same amount of power that computer scientists/software engineers do. FYI the article does not suggest literally putting CS in the social science department. TFA is just arguing that in light of how CS is applied in society, computer scientists need to be more broadly educated. I was a cryptography PhD student for awhile and I can tell you by-and-large CS academics are so far up the ivory tower it's a wonder they don't die of asphyxiation. To ignore the reality that algorithms, and those that design them, hold an enormous, and growing, amount of sociopolitical power is not just willfully moronic, it's arguably leading to the death of liberal democracy.