To clarify, I didn't equate tech disc with biomechanics. The point I was making was that the cue from the video of "flip the disc" was proven to work by tech disc data. If you don't believe tech disc to be accurate then that is obviously insufficient proof.
Im not trying to argue here, but even if I believe tech disc data is accurate, which I do, that still does not mean any 'proof' occurred. One person who has a lot of experience throwing discs claimed to be using the cue for a couple of demonstrations, that is all that happened.
Now if you show me a video of a group of amateur players who struggle to ever throw nose down, we can get some idea of the value of this cue. Show me people who cannot otherwise figure this out implementing this cue successfully, and I will change my mind at least somewhat.
As it stands, this cue, to me, is objectively bad. It is LITERALLY cueing people to introduce OAT, and honestly just misdirected torque on the body itself will be the most common result that I would expect.
Whatever you want to say about Sheep being a slight asshole sometimes, cool, I don't think he disagrees lol. His video on how to think about nose angle makes a ton more sense to me and is pretty damn close to how I try to help people sometimes. At the very peak of the hit, things are moving so quickly that it is extremely hard to 'feel' whether you are doing something wonky with your wrist. Really digging into how your joints unfold, particularly the wrist, in conjunction with your grip choice, unconvers almost all explanations for nose-up issues in my experience. Maintaining the integrity of that 'dingle arm' unfolding and going out of your way to NOT introduce a dramatic or deliberate roll of the wrist gets my vote for a much better cue. Basically the opposite of what this video is saying.
I have no data to back this up, but I am becoming convinced that people are trying to overdo the whole nose-down thing now. And weirder, I think a lot of the standard cues (pour the coffee, turn the key) can be exaggerated to the point where they have the opposite effect. I mostly believe this because it seems like it happened to me, and when I started emphasizing a more neutral nose to the trajectory, rather than trying to get a negative angle, my swing feels better and my discs fly farther. Take all of this with a mega dose of salt because its all feel based.
I do not personally have a tech disc, but will in a couple of weeks from what it sounds like. Maybe I will find some interesting ways that I am wrong
/Not to brag, but my tech disc setup is gonna be sick. My Dad is the one actually getting it, and they live out on a bunch of land with this 100 foot astroturfed, air conditioned barn. The net he set up is like 12' high by 15' long so I can throw whatever shots I want lol. Hoping I can help him figure out nose angle without using the bonapane style grip as one of my main objectives lol.