Very valid point. I have landed on airstrips that do not actually exist in MSFS, although they DO exist in real life. Just an opening in the trees out in the mountains as far as MSFS is concerned. Land, park, shutdown, logbook.
I have been called for supper and quickly plopped down at the most convenient location, shutdown, logbook.
I am not sure that the system really cares where are when you shut down. As long as you park and shut down you will get a landing entry in the log. It may just read “vicinity” but it will be there.
You can even just fly into the side of a mountain and get a log entry. You will be short on landing side of the ledger but it will be logged.