Haha, you started this.
It probably matters to stanford admission people. Now, they have a better idea what to do next year, I hope.
Admission is a very complex issue. Hopefully the feedbacks to them from here can be useful.
That is,
Without using waitlist, they can achieve the same yield.
As I read somewhere before that stanford does not really enjoy the trouble of using waitlist. So, the results of this year could give them a better idea of how to handle this next year.