I ask myself one question when I rate fellow pilots (and none of us are perfect). The question is, would I feel comfortable having my wife on an airplane flown by that person. In this case, not only no, but HELL NO!
There are so many ways that could’ve ended badly.
The most obvious is that it’s really easy to lose your references over water.
You’re not the only one flying low over water. Thousands of birds do too.
A heavy freighter like that would’ve been a handful, if it lost an engine due to bird ingestion.
But, in the end, an aircraft fly just as good at 100ft. The problem is that you have dealed away all your safety margins.
That is the most important part. Then comes good energy management that keeps the plane properly poised in case of engine failure or some other catastrophic event. Most important is how the “hold my beer” attitude totally cancels out the other two crew members. You could sense their discomfort even before he broke off the approach. A plane on the runway is no cause for discomfort. They were uncomfortable because they had no idea what he was planning to do. I would bet that he has a “reputation” within that airline that might even be bad enough to extend beyond it. That video alone will ensure that he never works beyond the wild west regions of Africa or Russia.
EDIT: also, the first officer (apparently also a Captain) had an obligation to cut that sh** out. He failed too.