My understanding is that the altoids tin PSK was developed primarily for person in flight who would be thrust into a survival situation as the result of a forced landing or crash, perhaps having only the clothes on their back. For that purpose, it is way better than nothing. A bulkier, more adequate survival kit could hinder your egress from the craft, putting you in jeopardy.

On the other hand, if I am planning a wilderness trip of some sort, nearly all of my gear is devoted to some aspect of survival. In this situation, a dedicated altoids style PSK makes much less sense.

I do find an altoids container just about right for holding my backup fire starting materials, which is definitely a redundant item I will carry gladly.