The STOVL flight control is impressive. And after a lot of time and money - STOVL has added double-digit gigabucks to R&D, starting with the two engines - the system has become reliable enough to perform repeated operations with journos watching. Also, congrats are due if they actually did practice an afloat engine and lift-fan change.
However...
+ $50 million per airplane
+ >4,000 lb deadweight
- 5,000 lb internal gas
Not to mention that the CTOL airplane has its wingspan dictated by parking on the Wasps, and its overall length constrained by the elevators on the Invincibles.
Now all we need from the Marines is a CONOPS that makes an iota of sense and we're off to the races.
PS - Note the bloke making a very careful walk-around visual check of the landing spot at 4:15-4:45.