Isn't the point being made that there is nobody else capable of demonstrating it?

The amount of training matters. If it's always him, that has some implications on how hard it is to turn into a product.

And a quick demo doesn't do a good job of showing fit for purpose either. Maybe performance.

I can see this potentially having some usefulness if refined, but from a strictly practical perspective, I can't see many pilots surviving a boarding if the vessel has any firearms. It just lacks maneuverability.

You (obviously) combine it with fire support. Just like a ladder or helicopter assault on a ship, or an infantry attack on land, or really any other military manoeuvre.

Sure, I don't disagree here. My point is that whether it is fit for purpose remains to be seen or whether it's a solution in search of a problem versus alternatives.

I think the earlier posters are pointing out that no one else seems to be able to safely operate the thing, which suggests that it might not be fit for purpose.