"We hold that a party's coordinated expenditures, unlike expenditures truly independent, may be restricted to minimize circumvention of contribution limits,"
SCOTUS is talking about "Party" spending, not individual spending, nor are they talking about PAC's or citizen's groups.
Tne Party has no rights, only individuals have rights.
The point of citing that case was to show the courts predisposition to limit campaign spending and the makeup of the split on the bench, and who the swing justices likely were.
Will the court split again for ad bans? That I addressed in a previous post.