Okay, I'd like to clarify some terms, as I understand them, because I think the discussion got sidetracked along the way, iiuc.
First of all "Processing" does not refer to situations where the S-A makes the decision to leave on his own. So, it doesn't refer to coaches having frank conversations with players about where they stand in the pecking-order and the likelihood of future playing time with the expectation that some may choose to move on. It also does not refer to guys who decide that the academic rigor or particular major is not worth their time and decide to move on. I would call these free-choice departures by the S-A's to be "natural attrition."
Secondly, "Processing" does not refer to S-A's being kicked off the team for rules violations etc.
IIuc, "Processing" refers to coaches removing players from the team in order to make room for new players who will hopefully be better. Telling a kid that if he wants to stay at the school, he has to take a "medical" scholarship, giving up workouts, practices etc with the team, would be a form of processing even if the kid technically chooses to leave.
Now, obviously, there is no way to tell simply from the statistics whether SA's are departing because of their own choice or because S.A's were processed. However, here are some numbers that might help.
Schools are allowed 85 scholarships at a time. If every kid took a Redshirt year, then 85/5 would be 17 SA's/year. If no kid took a RS year, then 85/4 would mean a little more than 21/year. So, it seems to me that 19/year is a reasonable baseline to start with, before considering any "natural" attrition.
Now over the last 10 years (2010-2019) based on Rivals database, the average # of recruits signed each year for selected schools were as follows:
Alabama 25.1
Clemson 22.4
GT 20.5
Michigan 23.3
u[sic]ga 24.4
Now, what I think should jump out at you is that GT is well within what we'd expect to see with only natural attrition while suggesting that Bama and georgie are begins to strain credulity.
The problem with "Processing" and "Recruiting" is if the recruiter is telling a mom or dad about the 40-year decision and the value of the GT degree, but then the coach is going to throw the kid overboard after 2 years because kid's best isn't good enough.