> Dehydrated food requires water. So, if bugging out, you need a supply of clean water or you don't eat.
> If you cary your water with you, then you might as well carry regular food.

I don't agree with that conclusion. It's better to carry dry food plus water than to carry wet food and less water (for the same weight), because it is more versatile.

You have more clean water that you can use in first aid or whatever. If found water is common, there's no problem with adding it to your food. If found water is scarce you can just not eat, because you can last for weeks without food but only days without water (and it takes more water to digest the food). Water is heavy and when bugging out you will have a lot of other stuff to carry, so it's good to avoid committing water to the food until you know whether you can find more.