I assume you are referencing this, wasn't hard to look up.PS4 production was basically killed after April 2020 it's not even a secret lol. Why do you think they also had to eventually send out PR they are gonna produce an extra million units.
The plan was to kill PS4 in the lead up to PS5. Jim outlined their plan to mass migrate users in numbers never seen before he of course never saw lockdowns and chip shortage coming.
Expect More Cross-Gen Games As Sony Orders 1 Million PS4s
The last generation looks to continue a bit longer...
www.thegamer.com