If you mean that all six conservatives could be impeached today, there really is only damning evidence against two of them right now and impeachment has to start in the Republican-controlled House and get a 2/3 vote in the Senate, none of which have a chance of happening.
If you mean that Democrats could expand the Court to 15 today, that also has to go through the Republican House first, as well as centrist Democrats in both houses who might view that as too extreme. I am an advocate for expanding the Court, but I would stop at 13.