Red, white, and blue are the colors of the American flag. (As many other countries, but we specifically refer to our colors in that order.) It didn't say the ice cream looked like an American flag. Yes, when it is displayed blue, white, and red it looks like a French flag. When rotated it goes red, white, and blue which Americans associate with our flag.

Also, it would have to be rotated a quarter turn to be Dutch: red on top, white in the middle, blue on the bottom. But I wouldn't expect you to know European flags