are you saying that he wont be able to nominate and replace Ginsberg if under impeachment?
120% of the Democrat Media will lengthen the days to 30 hours and the weeks to 8 days so they can scream about it at the top of their lungs 30/8/365.
Now tell that to the Democratic Party, ALL of the media (including Fox), and the 55% of the country that is brain dead.
It will be political warfare, with the impeachment becoming the cudgel they use to try to beat down the nomination. Of course they'll scream "racist!" at any nominee, but that's a dead horse. The usual "rape" charges will be pretty much a non-starter since RBG's replacement will very likely be a woman.
They have no other weapons left, so they will use impeachment and the media to try to derail any USSC action until after the next election. They are not going to just roll over.