What study? By whom?
It also contains 4 of the most liberal justices to ever sit on any bench.
Today’s Court contains four of the most liberal justices to sit on the Court ever. Two were Obama appointments and Obama will almost certainly get to replace the other two with much younger and even more radical justices before he leaves office.
Obama’s appointments will be legislating from the bench for the next 30 years.
The key there is FDR who did in fact stack the Federal Bench with hard left ideologue from which we got all the most expansive rulings and have never recovered.
That being said this lady is on powerful psychotic drugs if she thinks this is a particularly conservative federal court. No court that observes no meaningful limits upon their or federal power is either just or conservative in the american sense.