Man, you don't even stop to smell the roses before sprinting to scream "tu quoque," do you?

You're wrong. The decision had nothing to do with the constitutionality of the ACA. It explicitly avoids any decision on that grounds, even in dicta. This is not, in any way, a sign that "not everybody agrees that this law is unconstitutional." There was no constitutional issue here, just an application of existing constitutional standing principles to Virginia's claim of standing. Again: there was no discussion in the opinion of Virginia's argument about the constitutionality of the ACA. There was no constitutional issue decided here.