That email he is referring to is in March of 2020 and the PS5 Pro designs did begin at some point in 2020 and MS 100% knew the Pro was coming and the approx specs Sony settled on
They did not know about PSSR which no one mentioned prior to Morse Law is Dead breaking that document
Heck I was told a long ass time ago between the 15-17 TF range of the Pro which I said here long before the Pro was ever acknowledged and I agreed to say things like "I am guessing" because of a deal I agreed to with
Mod of War
here years ago so I didn't have to burn a source
Here is the quote and article as to when the PS5 Pro was greenlit sometime in 2020 and when shit like this gets the ok I can guarantee you the other camp knows what they are doing
Nishino: So we have done Pro in the last generation. We learned a lot from there. When we were selling PS4 Pro, in addition to the PS4, 20% of customers actually got the PS4 Pro. It was high end, it was premium tier. So there are potential users acquiring those kind of units. Interestingly enough, it was not just about highly engaged users; actually, new users comes to PlayStation to get PS4 Pro, as well. So we started working on PS5 Pro even before PS5 launches — it was another five-year project for us. So there was a conversation around whether we wanted to do another Pro or not. But the main thing was, there are technologies we can grow up in three years time or five years time. So the innovation and technology advancement is more quicker in a modern world. Phones are updating every year, PCs are updating every year. I don't think we'd go every year updates, but there are things we can package together to bring the greatest things into game console segment range. So that's the vision.
https://variety.com/2024/gaming/news/playstation-ceos-hideaki-nishino-hermen-hulst-1236194125/
This is as far as I go to proving someone else they are wrong and they can believe what they like