The point is that these generic-offtopic complaints are extremely repetitive. Maybe the first 1 or 2 (or 17) times one sees them they aren't a big deal, but after that it's bad to be overrun by them like weeds. It's not that they're wrong—rather, precisely because they have a point, they tend to get upvoted, crowding out more interesting/specific conversation. That then leads to complaints about the complaints and god help us. That's why we added that rule.
It's a tradeoff between the particular (yes the annoyance exists, yes the comment is valid—I personally agree with it) vs. the general (it's even worse to see these things over and over again, especially at the top of threads). Both are valuable, but only one can prevail and the global optimum is more important. If you really feel strongly about such formats, you should take it up with the people who are choosing to publish this way. Complaining to a link aggregator is like yelling at a photograph.
Thanks for the kind words, I think! - but... three links?
Also, I protest. The number of HN posts I "personally don't appreciate" is massively greater than the number I reply to. This is an internet forum, after all; I spend my days failing to appreciate things.