I've used the FD puzzle blades and liked them.
They work great for what they are designed for and lets face it, when you are using a blade that small (thin) and with so many TPI (teeth per inch) they are bound to wear faster than larger blades. Granted that the glue in plywood is hard on blades but, that is true for all sizes of blades. Just try the same size blade on solid wood and then plywood and see which one lasts the longest.
Jigsaw puzzles look and work best with the thinner cut that the puzzle blades have compared to the wider kerf of larger blades in my opinion.
Rog