Why are the new American Muscle Cars so Blocky???

I don’t understand the gigantic wheel trend. I think a car riding around on 20" wheels (or 22" on the Fisker) looks ridiculous. Most race cars run on tiny wheels. F1 wheels are only 13" (dictated by rules). Indycars are 15". It is a severe PITA packaging brakes and decent suspension geometry inside a 13" wheel.