I think you're being overly pedantic in your concern for the difference between "buy" and "own".
Most people in the US will say they own their home even if they have a significant mortgage against it. You can be upset that people are not using the word correctly, but that's kinda pointless.
If you keep posting unsubstantive and/or flamebait comments, we're going to have to ban you. We asked you this just recently (https://news.ycombinator.com/item?id=41604621), and you've unfortunately continued to break the site guidelines.
Most people in the US will say they own their home even if they have a significant mortgage against it. You can be upset that people are not using the word correctly, but that's kinda pointless.