A total of 4 users claimed that they did or would cancel their subscriptions in the comments, and 3/4 of them hedged by saying that they would cancel if this problem were real or happened to them. It looks like only 1 person claimed to have cancelled already.
Is there some other discussion you're looking at?
Yet if you went by the HN comments, you'd think it were the biggest item on primetime news.
People are really champing at the bit.
It is worth mentioning that the comments that remain are valuable, as they highlight the captured market size and express concern about the impending deterioration of the situation.