even when it says x2 or x3 it could be a random fake post from 1 person

Exactly

Yale might not do R2M but they are known to make it very clear that they want you so if there's been no correspondence, that's definitely a sign - also Stanford and Penn has indeed sent out calls

Yale won't get everyone they want, so don't worry if there is no correspondence from any of these programs

If a place has sent out RTM calls and you didn't get one... would it be unusual for you to still match there? x2 << not impossible, but your chances are much lower

<Not really. The applicants who are getting r2m calls at these locations are getting r2m calls from all the others that do them as well, and everyone can only go to one program.