That claim, despite the authority supposedly behind it, is just nonsense.
On one hand, it just doesn't pass the smell test of simple physical reasoning. A non-running engine isn't going to generate the heat that is required to generate condensation - it will have only a very trivial amount in it from the last condesnation.
Here's some real data. 25 year old Deere, laid up on the Great Lakes over winter, year-old oil, heavily used (500hrs, albeit much make-up oil in the interval). Just fine come spring.
https://www.bobistheoilguy.com/forum...OA#Post4433182