The other notable aspect of this argument is that when Barrack Obama tried to fill a Supreme Court vacancy he was denied because the excuse was the it was an election year.
But the Republicans appointed a judge in an election year.
Biden has often been accused of being weak an ineffectual.
So if he really wishes to erase that perception, he should just increase the size of the court.
The US is not longer a nation ruled by moderates, but by exteremists, so Biden should get in step with the times and act accordingly.