He does seem to be the kind who had a experience w/ insurance NOT totaling out a wrecked car because there was not enough damage, and then was without a car for a month while it was fixed and it never drove right again. So he's determined not to have that happen again. He has DEFINITELY left no doubt as to the status of this insurance claim.
As has been said, if the ball is in the center, it doesn't matter. BUT, if I am running a bit tight, I run one tank to the low fuel light, then finish on the other. If I have 10 gallons, I would rather have 7 and 3 instead of 5 and 5. Even better is to have 15, with 12 in one tank, 3 in the other.
