Best reason there, especially in snow states. I have been stranded for only as long as a couple hours one time. Luckily it was in traffic and waiting for wreck clearing (not mine) with others around. There are places along my daily commute where I could blow far enough off the road to not be seen, or stuck in a whiteout blizzard, or something like that. Good to have fuel for heat at least.
As far as condensation goes, it is possible in a diesel as they do not have the evaporative emissions sealed systems like gas cars, but it is still not even a concern on my part. I do go through fuel faster than some so I fuel up weekly anyway.
Biggest fears and effects from condensation in the past was tank rust internally, but today's tanks are plastic, so no problem there either.
I don't practice what I preach, but after the shaky here last week, the lines at the stations were really long. Fortunately, power stayed on for most places, so the pumps worked. I run my car until the fuel level alarm shows <50 miles remaining.
I'd be more worried about having proper gel point of the fuel than condensation.
IN the western mountains of Maine, my father in law needed a tow this past Saturday morning in his '18 Duramax, local fueling place gel point must have been -10F. Friday night it dropped to -13F at his camp (only 40 miles away) he made it 3/4 of the way home before he had to call for tow and place the truck in a garage with some PS 911.
Needless to say I'm going to be giving him a big jug of PS white for xmas.