It's like saying 'you might think this engine is broken since it can't run on the water that it is filled with, but if you simply remove the water and replace it with petrol suddenly the engine is fixed.'
The post seems to approach the paradox as if it meant to show that tolerance is inherently broken when in reality it just points out the possibility of problematic aspects if incorrectly applied, like in the above where it is obvious the engine itself was never broken. The paradox doesn't disappear, it simply doesn't apply to that particular application.
The main idea from OPs post is often ascribed to Yonatan Zunger as some huge revelation, but really this idea has been about for quite some time as its not exactly hard to come up with. For example, K. R. Popper 1945, and E. M. Forster 1922 both wrote about this.
Based on your and the other guy's comment this sounds like European/Old-World identity bias (and a bit of availability bias); Assuming that other countries within one's group-identity are very similar and [non-European country] is a lone standout when it comes to some aspect that one just learned they differ on. It's so common to see these kinds of comments on posts of the form 'why do American's do this one weird thing different than everyone else'.