That's a very good point.
As a hacker, I have a stubbornness and a strong sense of the justice of technical correctness, so I can't help but try keep the larger sense of the word alive. Even if only as part of a background chorus of hackers saying "well, actually..."
But I do try to remember that we're the weirdos here.
By your definition, I would definitely count (as would, say, my cousin who is buying laptops for her kids to take apart and homeschooling them and taking a hacker's approach to parenting or the one who got really into theology for about ten years or my uncle who was obsessed with cameras or...), but I think the prevailing view sees hackerdom as tech (or at the very least mechanical) related and I also believe that hewing closely to a community's default understanding of a term is useful for communication, so I still wouldn't claim the title on HN. In an anthropological/historical/sociological exploration of hackerdom, I probably would. :)