I don't think we should accommodate anybody with the handle 'xkcd-sucks', much less anybody so flippantly derisive of people who do code because they like to code.
They weren't derisive of people who like to code, they were simply pushing back against the idea that you must do it as a lifestyle rather than just a profession. I love xkcd (and that username is clearly just trolling people who wrap up too much of their identity in the things they like), program for fun sometimes, and love to read computer science books for fun, but I completely agree with the sentiment that the common view that programming must be your lifestyle in order to thrive in the industry is unfortunate and problematic.