It is called marketing, people! Someone is actually annoyed by this? Guess what... every manufacturer does this... including BMW. They all have their little thing to try and make their car stand out in a crowded market. Whether you like the one man, one engine thing or not, it is a great piece of marketing for many people. It also doesn't take away from an awesome engine whether it makes an actual difference or not. Also, whether it is meaningful to everyone or not, it is something about the car that is a little more unique, special, sets it apart a little bit... why wouldn't AMG promote this?
P.S. Don't you find it annoying the McDonald's has this obnoxious guy named Ronald promoting their product. Can you believe some kids actually buy into this clown (not a REAL clown by the way, he's a fraud) and actually buy McDonald's products because of it? How lame is that? C'mon!