Lots of assumptions in here tonight.
Who knows if this is less stiff than a conventional fork as there is no data.
Damping – why would there be no damping? Play tennis with an aluminium racquet and then with a carbonfibre one and tell me they feel the same.
60mm of travel is still better than a rigid fork.
Brake twist – maybe they are designed to resist the braking loads? Again no data to say either way.
I like it. Now build a frame with similar technology for the rear and give me a 60mm travel 1.2 kg full suspension frame.