“So isn’t it in my best interest (if I build quality websites) to keep the serps as top-notch as possible?”
Of course, just like when anyone breaks the rules of a game you play in, you tell the officials if they don’t see it.
The cheaters cry and cry and cry when people follow the rules. It is honestly one of the most pathetic things on the Internet. These guys can’t compete so they resort to cheating, and complain when others follow the rules. It makes no sense obviously, but that is part of being pathetic, you have to do these hopelessly illogical things.
It would be funny if it wasn’t so sad.
People who build quality content want quality results. People who throw trash against the wall, want trashy results. You can do either one, but the interests of these two groups are exactly opposite, and no one should pretend otherwise.