Yeah, I realized that too when I rewatched the matches, haha.There were many times where you could of knocked Armada out of his float by just full hop ice blocking his ***.
@Choknater
I agree with much of what you said. I'm just still learning the match up and have yet to implement a lot of the stuff I think I should be in the match up. However, I'm not sure that Peach using more dair and tunips is better in this match up. You have to be grounded as Peach to get a turnip, which you don't really want to be against ICs. Yes, he can get one after he has knocked you away, but at this point there is better things to do like killing Nana. Keep in mind that Armada has played against Smasher89 a lot. This might have made him realize that ICs can work around turnips very well (you mentioned his video). Against Sopo turnips can be really good, however, and you can see him getting them at this point in my matches.
To use dair on ICs' shield you have to float low (I guess) which is risky. Dunno. He never used it against me. I'll try to use more nair perhaps some side-B. I think Peach can fair ICs out of these moves, but maybe they could work from time to another.
I don't really think that his strategy is suboptimal. As far as I know he has yet to lose against an ICs player, but maybe that is because he is pretty good.