I noticed no armament present in the video, I wonder how the trials would be impacted with a full load.
In theory it won't have a load when landing vertically, but as soon as you put external fuel and stores on there the aircraft's biggest asset (stealth) is severely compromised. Just for some historical perspective, the F14 was a BEAST and it has yet to be truly replaced (by another aircraft anyway) in the fleet interdiction role. It was not retired because of it's age or lack of capability. Upgrades kept the F14 current in terms of warfighting ability (in fact they were conducting bombing runs with them, a role the F14 was never designed for). It was retired because of it's insane maintenance requirements and expense of keeping the flying. Now they're going to field a jet that is ultimately even MORE complex with compromised warfighting ability. Does that make sense to anyone?
But this is what happens when politicians get involved in weapons procurement and force requirements down the throat of the military. They're forcing a "do-it-all" plane on them to save costs and it's going to end up embodying all of the bad qualities of
compromise and may very well end up costing more in the long lens of history than a purpose-built jet.
BTW, the Brits are NOT HAPPY about the delays and cost overruns and are openly expressing regret with the decision to replace their Harriers with these poop-cans.
Oh, and just so that it's not all bad news, the conventional (hook equipped) F35 is a very capable plane. It's only real drawback is it's single engine (which is a bigger deal in Naval aviation).