I think people can fool themselves when it comes to testing like this, and that the only real way to know that testing has succeeded is through defense of results, through repeated trials and, under more open circumstances, through replication. So for me the sheen on those earlier nominally-positive results was dimmed when competent critique came out to cast them into doubt. The only way to revive the sheen would be for the researchers and engineers who did the testing to defend their results against the critiques, or to conduct new tests incorporating the feedback. I doubt this will happen.
That leaves in doubt the status of the earlier positive tests as a basis for concluding anything. Perhaps a robust defense or future testing would support the earlier tests, or perhaps the critiques were spot-on. Which way one leans on this question will depend on whose judgment one trusts.