Not even close to the worst SCOTUS in our history. Our nation would not have been primed for a fall if a parade of bad decisions had not been handed down between the Civil War and the 1980s.
The problem goes back at least as far as the Slaughterhouse cases (in which an activist court invented lame rationalizations to ignore the plain meaning and intent of the Fourteenth Amendment). This had the dual effects of denying rights that were supposed to be protected and opening the field to legal mutations of the 14th rather than an organic development of its correct meaning (i.e. binding states to respect individual rights, as opposed to guaranteeing any old thing a judge can dream up).