One test is valid as long as everyone understands the constraints of the test. I don’t think anyone with the skills to do this test would think that the results are conclusive in all conceivable scenarios. The test will produce data that will probably feed further testing and discussion and there is nothing wrong with that.Oh, I am sure there are lots of people that are going to give any testing a lot of weight. However, one barrel is not a test... but in these days of meme science, it doesn't suprise me.
As an impartial observer that owns and shoots some rifles with barrel nuts, your shrill objections to the testing is not a good look for you. I have great results with barrel nuts on my non-benchrest rifles. Maybe you could contribute. Send a couple of barrel nuts for the test. I’m a potential customer also. I want a 6.5-284 on my spare 700 LA.