[bri3d]

That Bardwell video is about normal motion blur, which is highly desirable in any cinematic content. You'll see in those YouTube comments (and there are a few mentions in the video, as well) complaints about "stutter blur" and "shaky blur" - the effect you get when you apply HyperSmooth or Gyroflow to physically/exposure-time blurred video. I wouldn't say that smoothed motion blur is desirable in FPV either.

These days, you'll usually see people in FPV either fixing their tuning to require less smoothing (the best solution!), or moving to shorter exposure times and post-production blur instead.