It was at the request of the CDC. They're more challenging the precedent than anything else is my understanding.
Yep. I think this is a bad call. I don’t trust this SCOTUS, so don’t enshrine bad precedent at the SC level. Say, “we would appeal, but it’s moot because we’re lifting the mandate” and move on.
As to the mandate… if they were mandating everyone wear properly fitting N95 or equivalent (KN95/KF94) masks at all times I could see it. But I don’t see it continuing with the way it was working under these current circumstances.