This is a silly statement to make. Back in 1991, Democrats didn't vote unanimously against Republican confirmations for purely political reasons the way they do today.
Clarence Thomas never would have been confirmed in 1991 if the Democrats acted then like they do now. There were 57 Democrats in the U.S. Senate when his confirmation vote was held.
I strongly disagree.
You omitted vital information.
In 1991, Clarence Thomas consistently polled at 55%-65% for confirmation.
In the spring of 1991, Bush had an 89% approval rating!
Eleven Democrats voted to confirm Thomas. Every one of them came from a state that Bush won in 1988.
Two Republicans voted against Thomas, both of them from states that Dukakis won in 1988.
Seven of the eight Democrats on the Judiciary Committee voted “No” on the Thomas confirmation. Only DeConcini, from the bright red (1991) state of Arizona, voted for Thomas.
Obviously, Scalia was confirmed unanimously in 1986.
Bork was destroyed in 1987, and nothing has been the same since.