My point of view,
A standard missed approach is a normal procedure, but still some passengers might feel uncomfortable, which is logical, you just expect to touch down instead of buzzing away.
Don't forget the flight came from the US, you know some US citizens are prone to sue everyone/thing if they feel they've been mistreated
Performing a non standard missed approach, we sometimes need to discuss this with ATC eg due to bad Wx or operational limits due to a tech problem, etc... is no problem.
In this case the go-around was discussed and approved with ATC, no harm there, only when I first saw this video, my initial thought was, oh my, I hope they don't get in trouble for this. The go-around performance of the 330 is massive and in normal circumstances the plane would have never flown this close or low passing the terminal. It clearly was a 'show' from this crew, who actually knew their job wasn't at risk anymore, so who cares. Beautiful to look at, a lot of emotions on board and on the ground of course, but knowing many pax are not 100% at ease and minding some US pax. This will be and needs to be investigated as a 'show' but most probably will find no consequences, except a warning. But who cares
I don't...
my 2 cents
a FO A330