I find the whole fact that someone's cut together a whole video of someone looking at what's right in front of her weird and creepy personally.
and there is a difference between ogling and just looking, of course there is.
and, yes, I do see layers - but I don't think it's about passive and active ornamentation - I think it's interesting that you assume the fully dressed woman is there for ornamentation at all in fact, because I think she's there as an official, who happens to be a woman.
My experience is actually that the women who are there as ornamentation just look at the crowd and smile, barely even glance at the fighters, because they, too, are just doing their job.