What's going on at PSA in their T206 pop report?

[swarmee]

2021 - TOTAL POPULATION - 253,098
Grade - 204,043
+ - 35,942
Q - 13,113
- Autographed copies - 86


2022 Current Population

TOTAL POPULATION - 220,773
Grade - 175,175
+ - 33,889
Q - 11,709
- Autographed copies - 70

So in one year, at the peak of the market that is so backlogged that maybe 6 million cards are still sitting at PSA ready to be graded, the population of PSA graded T206 cards has DECLINED in the past year. This is coming from Gemrate, a company that monitors how many cards PSA is grading monthly.

Declined not just in a small sense, but by 33,000 slabs. That is 15% of all PSA graded T206 cards. That is also the equivalent of 63 complete sets of 524 cards. Even the biggest T206 Master Set collector, David Hall, only had like 5000 cards in this set, right?

So what's going on?
1) Did everyone who has ever cracked a PSA T206 out of slab for their binder sheets send their flips in at one time for removal?
2) Did PSA use their APR tool, VCP, Worthpoint, PWCC history, etc to figure out all the missing brands/series/factories in order to properly categorize them after having changed their set parameters over the years from just "T206", to "T206 Sweet Caporal" then "T206 Sweet Caporal 350", and now "T206 Sweet Caporal 350 Factory 25"? And they're currently masked as they replace the data in the database?
3) Is it some system glitch that only seems to be affecting T206s?
4) Something to do with the grading scandal?

It's curious. If you guys have PSA slabbed T206 cards, check and see if any of them have been removed from the registry. If so, did PSA notify you? Does the flip match the Cert Number Validation tool?