That's mentioned in the article:

Further, there’s at least the possibility on the part of the developer to claim that such usage is a “parody,” with parody and satire protected at the highest levels of American law through the application of First Amendment freedom of speech rights. However, courts will often require actual commentary to be made in order to extend such protections. In that way, a store name like “I CAN’T A” (or something far more clever) has a greater chance of succeeding than simply using a play on the word “store” in Scandinavian.