All of it?
I think people of a particular viewpoint have allowed their bias to drown out reason.
To top it all off, it will be very difficult to argue in good faith the mandate was not arbitrary. It quite literally came down to a single dude deciding who he liked better.
Just in this very thread we have people admonishing Adams for "ruining" the mandate, and if he had just been more careful then all these anti-vaxxers would be out of luck... as-if the mandate was a weapon to use against those we don't agree with. That's wrong.
So, while you may assert there isn't much substance to the case, I assert you are very wrong. There is no reality where what happened is legal and there should not be a reality where what happened is legal.
This was the first step in undoing some very great injustices.