Dems argue that Trump diminishes the presidency. GOP argues Feinstein & Co. diminish the Senate.
They are probably both right.
But, both may be politically effective. If Kavanaugh is not confirmed, or he is confirmed and then impeached, everything will be changed in this country. This will 100% be the norm going forward, for both parties.
Evil preaches tolerance until it is dominant, then it tries to silence good.