Logically, all backers are very aware of each of the words of the testers. I have seen all the videos, twitter, etc. Surely many will have done it too.
Things, said or not jokingly like saying that "If you want to see the unboxing ask that the people of pimax let me show it" with these more or less exact words and more phrases that people are collecting, they do not look good in a closed test.
Regarding the restrictiveness of the NDA, it is to be assumed that the other testers will know, it is also not a bad idea that in the end Pimax publishes these restrictions, I do not think that it influences at all. Do not?
But hey, if they have given explicit permission to someone, I do not know how this legal issue goes.
I think it's better to concentrate on analyzing the product and then discuss it together. At the end of the day we are all working together to make it the best possible product.