Actually, the person's claim was that the villian of the episodes was a typical Ayn rand villian, and the Main Six were acting and talking exactly like Randian 'heroes', and that it was clearly Randian propeganda to make little girls Ojectivists.Ayn Rand raised the point of 'altruism' forced via social obligations and peer pressure not being true altruism, and likely discouraging true altruism. Such is indeed a valid point, and the point that the episode was making. The problem was that Ayn Rand then went on to conclude that we should act on "rational self interest" instead, while many of her purported followers seem to have conveniently forgotten that she was speaking about the obligations of social conservatism as much as she was about collectivist government. And so was this episode.
You guys are on the liberal end of the spectrum, so how about this. Imagine a socially conservative small town. Imagine that everyone knows each other and everyone is polite... but god help you if you don't conform to their standards or neglect your obligations or are just an out-of-towner whose 'different'. Full of loving and hospitable family and friends...conditional on you living your life the way they expect you to. Would you like that? No? Well then you might agree with Ayn Rand more than you might think... and the S5 premiere town is very much akin to those places, which do exist.
And then he complained about how Fluttershy isn't a good character anymore and how taking away a Pony's cutie mark shouldn't do those things .