> given that they signed off on racial discrimination being A-OK as long as it's by the feds
Nope. They lifted a stay. In the short run, the practical effect is similar. In the long run, different. If one can’t grasp the difference, one cannot argue for the rule of law.
> it's more than fair to say that this is authoritarian before we even see what comes next given that the feds and the Supreme Court are moving in lockstep
Yes, if the executive acts as an authoritarian and the courts sign off on it, it will be authoritarian.