Mine was very similar to yours and I am guessing I lost the firesteel rod within a year of carrying it. It may have dropped out long before I noticed, but one day I just looked at it and all I had was useless magnesium.

These combos seem fine in a kit or a pouch or something where the glue giveing way would not provide the useless part.

I have a Doan that I have had for probably 2 decades and it is still glued. I have no idea who made the one I had but regardless I consider the design a flaw. The firesteel should be the drilled part. Who cares if the Mg falls off.