Has anyone on the planet ever started a fire with a Harbor Freight Magnesium Fire Starter Kit?

The kit is listed here: Magnesium Fire Starter, Item #69457
It contains:
a serrated blade edge for making Mg shavings
a full length flint for making hot sparks
a block of Magnesium.

Supposredly the shavings burn at 5400F The whole kit is waterproof and fire resistant in block form.

Sounds great in theory but the blade was powder coated and would not cut. The flint was coated and would not spark. I used my grinder to expose fresh metal on the blade and the full length of the flint. It still would not make a spark. The piece is total junk. (I even doubt that it is Magnesium and will check tomorrow.)

So, has anyone ever had success starting a fire with one of these?