What a Beautiful Tank and Wait, NO SKIMMER?

OK, so what are people's thoughts on this. Here is a pro in the field with a beautiful large tank and he decided for now not go with a skimmer. What is the odds this tank thrives without one. Can it be done on a tank of this size without doing large water changes often or will he need to change out a ton of water weekly.

I think that was a very shocking reveal of this tank.