I don’t see the issue. Videos like the one on Helios is one of the reasons I subscribe to his channel. I want to learn more about companies doing ground breaking innovation. Of course such a video has some PR aspects to it. Everyone knows that a company granting such access wants something out of it. This is almost high school level media literacy. You should take such videos with a heavy dose of healthy scepticism, but it’s still very interesting to watch.

And if he gets some money out of it which he can use to help fund production of some high quality videos on historical engineering topics now and then, that’s just a win-win IMO.