Right now the systems in public domain reach 97% accuracy. Facebook doesn't need you, even if you get a million people to try to "trick" the system, you won't do anything. The verification is to fine-tune it.
By the way, you forget that Facebook can simply exclude almost all those who know about this. What are you going to do? Do you think nobody will notice the 10M user fan page themed "Fool facebooks AI"?
It just knows an extra thing about you, that you don't want to be tracked, so it'll hide news about tracking from your feed.
