When the clap skate finally caught on in long track speed skating, every record broke immediately except for the sprint, the 500m. My guess is it negatively impacted the start but only significantly enough to lessen its adoption / performance benefit in that event. By the next Olympics, the top three or four finalists all beat the record time.
I think True also overly restricts skating motion, which something like reducing facing and or cuff height would suggest. Graf is still the best biomechanically tuned skate I’ve ever tried. I think we’re on the cusp of a proper breakthrough in skates and everything else, but I doubt skiing is the direction forward. That’s been over-applied and we’ve seen the limits of its usefulness in hockey.