Good article but it's only one man's style.

Experience and practice with one's gear, food habits and partners is the only way to be sure.

You might consider mentioning that stove fuel is necessary if one is going to boil water for safe drinking. I consider my stove and a some extra fuel as the backup for my water pump.
I don't carry enough fuel to cover the whole trip as primary water supply but it would help stretch the safe water supply.