Democrats blocked Bork for an article he wrote 25 years before, which raised the libertarian argument of whether Congress should be able to regulate racial discrimination by private parties. It is to this day a challenging topic for even liberal libertarians, because those laws rest on a sweeping interpretation of the interstate commerce clause. But Democrats used that article to defame Bork as a segregationist. The second nominee withdraw his nomination after it came out he used marijuana, after what happened to Bork. So yes, Democrats were not in a position to play that cars a third time against a wildly popular sitting President.

There is ample evidence that Democrats would have behaved like McConnell did. For example, their threats to pack the Supreme Court in 2019. (After their threats to pack the Supreme Court under FDR gutted large parts of the constitution.) The fact is that Democrats don’t perceive conservatives as legitimate players in the political process. That’s why they continually raise alarm about conservative Supreme Court nominees, even though in 40 years of a conservative majority on the court, not a single major liberal precedent has been overturned.