you have to know how the official transcript work for PWGP, basically anyone who applied on an interim official transcript is on their own luck. what IRCC requires is the official final transcript and that many people don't have already.You also realize that some folks also finished during the fall semester, but schools like to confer all degrees for the year all at once in spring. Not to mention delays and limitations to processing because of COVID. It's not unlikely that IRCC might make considerations about this and just request an official transcript and program completion letter like for PGWP.
Yes, some fall grad may also haven't received their credential, but remember this policy goes back to 2017 or otherwise, they are opening it until Nov 2021.
I am pretty sure, a very good portion of fall grads already have the credentials and they really don't matter, people grad in 2018 could alone fill in the 40,000 let alone many CEC FSW inland applicants they are submitting as well.