The more I think about it, the less I like these kind of kits.
I think they are mostly marketing gimmicks.
The tiny blades any of them have are at best difficult to use for anything in the woods, especially if it is cold and your fine motor skills are off.
A $2 poncho will do a lot to keep you less wet, and more alive. It's understandable why they are not included, as they can take up a fair amount of volume. Even a 99 cent space blanket will keep most of the wind and water off you.
The fire starting means most have in them tend to be minimal, which usually means they are going to be difficult at best to use under field conditions.
IMO, snaring and fishing equipment is way down the list of things you need to survive. Not even on my list. If you are cold and wet because you have no $2 poncho, just how are you supposed to be fishing? And what good would it do you anyway?
Compass, whistle, and mirror are good. I don't think you need to get real elaborate with them. A $1 button compass will point you in the general direction you want to go, and most times that is quite adequate. A $1 aluminum whistle will work as well as any "survival" whistle. Of the stuff, a real signalling mirror is probably the most expensive and complex item in such kits, and not something easily substituted for.
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Warning - I am not an expert on anything having to do with this forum, but that won't stop me from saying what I think.
Bob