Do matches have a shelf life? You bet. They can turn to powder over years in a match safe. They absorb moisture and break down in the box at home too. I've never seen them fall apart in the box on the shelf, but but I seem them so old they wouldn't light. Matches that you are going to rely on for survival back-up should be replaced often. I replace my stash of "hurricane" or "lifeboat" matches yearly (REI has the best).
There's an old joke about a guy loosing his cabin because it was so cold the matches wouldn't light and when they thawed out, they burned the cabin down…. :)
I carry a firesteel and Tinder Quick tabs in a spy capsule, some matches in a Silva compass/match safe and use a mini-Bic lighter for my cook kit. I carry a spare Esbit tab for back-up tinder and don't forget your alcohol gel hand cleaner and the alcohol wipes in your first aid kit can help get a fire started in an emergency.
A rock makes a good striker for strike anywhere matches, as does the checkered metal surface of the Silva matchcase.