I would agree that some of the more extreme tests of flashlight durability are not relevant to likely use, even in extreme conditions.

The following might be more realistic

1) drop several times from above head height onto concrete
2) leave outdoors overnight, in the coldest weather in your area
3) submerge in water overnight
4) leave turned on in hot conditions, such as exposed to noon sun, or wrapped in a cloth (to simulate accidental turning on in pocket or luggage.

Any flashlight that can survive the above, should survive almost anything that its owner can.