As per the article, that's not an option. Even if the poster's parents grudgingly slap on a dish, they're living in an area where there's likely to be local ordinances against blatantly jarring or modern features on houses. As a bonus, hiding the dish under a cover will stop it from vibrating in the wind; not a regular problem for most people, but it might be if you lived on Cape Cod.
The means-and-ends moralists, or non-doers, always end up on their ends without any means. -- Saul Alinsky