Not on stream at least.
The match-ups are better with Fox but he doesn't have nearly as much experience that he does with Peach against them. He'll almost certainly use Fox in top 8 but the road to it he's being safer, especially since it's Bo3. Although this shows Peach's flaws and he's had close sets, he's still clutching it out. It could of gone VERY different if he went Fox, he could of destroyed people or he could of gotten destroyed. More room for errors with Peach. It's a double edge sword.
I think Armada is going to have seriously consider what to do about Hbox tomorrow. Does he have enough faith in his Fox to beat the planking strategy, or will he bank on Hbox lack of [recent YL experience] and do something people thought he'd never do again, pull out the YL.