I personally think that they've rectified this in a smart way by introducing 2 tracks: the advisor track and a normal one (this is just a guess since I received mail saying I've been accepted to the 'advisor track').
So YC is giving forum access to all the companies that applied but advisor access only to a subset of all the companies that applied. Is that correct?
I don't know. The fair way to handles this would have been to first honour the original deal. They have already put people through the application process and the were going to reject them if this hadn't happened. Instead of "accepting everyone" they should have rejected the ones original being rejected and then asked them forgiveness and confidence in this additional track. Now they have left a lot of people in the awkward position of doubt if they want to do it but without an easy way to say no.
So YC is giving forum access to all the companies that applied but advisor access only to a subset of all the companies that applied. Is that correct?