Rhinomed are currently running a sort of real world test of the...

Rhinomed are currently running a sort of real world test of the product with 60 elite athletes in order to prove somewhat scientifically the actual benefit of 38% more air. If this study shows a decent benefit achieved using the turbine I think that would allay your concerns. If you want testimonies, there are quite a few riders from the TDU who used the product and left favourable tweets.

I disagree with your action as I think it was never reasonable to expect meaningfully better results here, but I do agree with your sentiment that we need to see some traction in sales and some proof of efficacy, but more importantly they need to find a distribution partner to get this thing out to the masses.