Then you have stuff like point[0] and point[1] littered throughout your code, or you write getter functions and then you have function calls as an overhead which is roughly as expensive as the class. An instance of namedtuple is actually the Correct (tm) solution.
Sorry, which comment are you referring to? All I see is a footnote saying "One would be right to argue that collections.namedtuple() is even closer to C struct than this. Let’s not overcomplicate things, however. The point I’m trying to make is valid regardless" which doesn't really say it's a bad idea, just that he didn't decide to talk about it in that article.
Something along the lines of <x, y = point> would be a little cleaner than directly referencing the indexes. This technique can also be used in a loop <for x, y in [(0, 1), (23, 41)]: print(x, y)>.