Sorry for the image quality, but I too have had an issue with the brake pedal.
When they told me it was normal, I figured, "Yea, if Subaru engineered the braking system that could be true," because of how the brakes felt in my Impreza.
However, no other car I drive has brakes that does this so I'll be asking them to check again when I go back for my next service. I'll also ask if I can test the brakes of a new FRS to see if they feel the same.