Your math assumes the entire 48 GB Quick Resume allocation is rewritten to NAND on every swap.
Do you actually know that's what's happening, or are you just assuming?
Because that's the number that determines whether 400 TBW matters.
Another note: the Forza team told players to disable Quick Resume because of a save corruption/progress loss bug, not because of SSD wear.
That's like saying:
"Game crashes with HDR enabled."
therefore
"HDR damages TVs."
You're jumping from a software issue to a hardware failure claim with a whole lot of assumption.
Tech PowerUp claims a 400 TBW figure if the launch drive is based on the WD SN530 retail drives.
What I'm not seeing from your post is any evidence that Quick Resume is generating enough NAND writes to "kill the SSD" or turn Series consoles into doorstops by 2035.
Where's the write telemetry or failure data?