You are right, and if I make another thread like this, I will move the rules away from the thread. The rules are not positive, and also the rules by definition are meta (which is forbidden by the rules).
But I don't feel like changing this existing thread. To provide some rationalization for my laziness, I would probably say something about not changing the conditions of the experiment in the middle.
You won't be able to tell people to not go meta, or to tell them where the rules are, if you apply the rules to themselves.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.