I do agree with some of the list- Twinrova being number one for sure. I didn't think much about my favorite boss fight until they mentioned it, and I realized that, yes, I think Twinrova was the best boss fight. There were two stages, and it took a lot more strategy than, say, King Dodongo.
I don't agree that King Dodongo should be placed as the top ten. Honestly, the fight was very easy. In all reality, there was no real risk of getting hurt (if you stood in a certain area, then you wouldn't get hit by anything).
However, I am glad that half of it wasn't just final boss battles. They are meant to be more epic, yes, but how many times should we see Ganon on there? I can't say if they did pick the best one, but I am glad they picked just one (counting Phantom Ganon separately from Ganon).
And, as fun as the Gleeoks from the original were, I don't think they'd be a top ten, either.
But, of course, this is all opinion. Not that it isn't fun to talk about.