True, however in the "linking" section it didn't include platinum specifically and then this quote:
CROSS PLATFORM SAVE EXCLUSIONS
Platinum purchased on Nintendo Switch will NOT be accessible on other platforms.
On PC, Xbox and PlayStation, you will have a shared wallet, meaning that Platinum purchased on those platforms will be available across those platforms.
Felt inconclusive.
All in all i haven't touched the plat in years, so i don't miss it. This is more of a PSA for those who might have been confused as well.