Products like this do not have the burden of a trailblazer like the Chromecast. When the Chromecast was introduced, they must explain elaborately what it does. For this Amazon product, simply saying "4x storage 2x memory more than Chromecast" is sufficient in explaining what it does. People immediately know that it does what the Chromecast does. There's no confusion about that. Furthermore, it's also implying that it's better than the Chromecast. So, while that first line didn't entertain you, for many people, it says and implies a lot.