We are really not all the same. HN is a big old forum and there is no such thing as a normal response.
That person was describing their personal reaction to ... something. I don't think that proscribing dogma is helpful in response.
I mean, it's not "unacceptable", free speech and all. It's just silly to jump in and "well actually" a joke, especially when the explanation is kind of why the joke was funny.
Do I really need to spell it out?
Don’t yuck someone’s yum.
Let people enjoy things.
Don’t rain on the parade.