The plaintiffs in the case were several gop attorney generals. Related cases were also carried out by the Trump admin. And several courts had previously upheld that the ACA was constitutional because it does not force you to buy health insurance. It actually just imposed a fine if you didn't and that fine was considered a tax, which Congress has constitutional authority to levy. The GOP forum shopped to get in front of a rubber stamp republican judge.

Additionally, the whole point of these cases was not simply to get rid of the penalty. The idea was to get rid of the penalty so they could go back to the supreme court and again claim that the mandate is unconstitutional because now there is no "tax" associated with it.

I don't know where things are at now, but it seems unlikely to go anywhere now because it would be difficult to argue that buying insurance is required at all at this point. So we are left with the backup gop strategy of hoping that disarming the mandate will simply bankrupt the program. At least until republican voters wake up and realize that the program is miles better than what we had before.