The thinnest rationale I've seen was that Florida Federal district judge that gutted the CDC order one month before it was going to expire anyway, in that case she spent a comical amount of time defining the word "sanitation" after finding a couple dictionaries from 1944, when the act was passed, specifically because Congress neglected to define and codify what sanitation meant for the purpose of the CDC's authority. I'm like "okay. thats low key hilarious" and I would love to see how this pans out on appeal.
I just am not finding the court system to be doing out of character things. I can independently find some outcomes to be shocking or inconvenient, but surprised based on my analysis of how I expect them to act? No. Nothing surprising occurring.