Is Dollar General really considered a Dollar Store? When I think Dollar Stores, I think as bit lower on the product scale like Dollar Tree and its ilk. Dollar General is basically a compact Walmart.
It isn't and it really calls into question the rigor of the author, and also gives you a laugh about the hackernews crowd as well. Dollar General is _not_ a dollar store, its a general store where prices are not tied to "a dollar".
Though "dollar stores" have items that are not always only $1, the bulk of their inventory is keyed in on that price point, Dollar General has no such paradigm.