People really need to relax a little on bashing people with >10 scheduled interviews. I have already met several people with 20+ interviews, and in most cases they are people that are couples matching. As someone else that is couples matching, you really don't have a choice but to hold a bunch of spots as you have no idea where your matching partner will get interviews.
Also, just saying, it is crazy to be mad a people for holding more interviews then they may go to. Just like you, they presumably worked very hard to get those interviews, and unless they really are holding them to gloat about them and cancel them at the last minute (which I think is a very small number of people), they are probably just trying to make hard decisions like the rest of us. Besides, they will drop them eventually, and they will go to other people.