Bad, but not real bad.
I suspect the SCOTUS rejected this because it viewed the John Doe laws of Wisconsin to be a state issue. This is a BIG issue for Wisconsin.
Lots of avenues for relief on the state level. The Wisconsin Supreme Court is controlled by conservatives and has a recently elected conservative Cheif Justice.
I think they refused to grant cert since the case is already at the Wisconsin Supreme Court, which must apply federal laws that apply as well as any state laws in the case. Pretty sure this thing gets tossed at the State Supreme Court level.
With the screaming nut-job former Chief Justice freaking out about it.