Not sure how this is helpful to the parent comment.
> If you talk to a person, and the conversation is dull, they might be a boring person. If most of the people you talk to seem boring, then you are the boring person.
And I don´t really understand how you can come to that conclusion. That´s like 2+2 = duck
In fact,
> have limited relevant context outside your very limited definition of what is interesting
If the person in question has a limited (according to you) definition of what is interesting then asking him/her to "expand" the notion of what is "interesting" to match or be as "encompassing" as your own definition is not helpful. It isn´t even a viable solution really because you are not the same person.
And one more thing:
> You dismiss pursuits that have spanned all of human history like sports, family, food, religion as "pedestrian"
Some people are not interested in those pursuits and they are, in comparison, very "pedestrian" in terms of complexity. Now I enjoy all things related to food for example, but I would stab myself in the ears if I had to talk to people about their eating habits for more than 30 seconds once every 13 years.
Some topics are simple, others are more complex. The parent comment clearly enjoys pursuits that are of higher complexity and feels as if people in general do not share that interest and hence to him they seem boring. Asking him to change his personality and what he "enjoys" just so that he can fit in is so absurd to me because it hints at the idea that you should surrender your individuality in order to fit in with the group. An idea that I don´t really appreciate all that much!
Edit: and adding no offense at the beginning of your post does not make it less offensive. It just makes seem passive-aggressive :P