Whether you agree or disagree with their overall claim, do you really think that either you or they couldn't find a 6th example, and more, of failings like those 5? It seems obvious to me that they gave 5 because they're writing a HN comment not an entire book and they had to stop somewhere, not because they spent an hour searching to find as many examples as possible and couldn't get past 5; so it seems like a poor rebuttal to make the count your argument.