IMO, the context was different. One was the natural order of judicial appointments that should have happened. The other was more due process not really unprecedented in the past.
Sure, everyone does the fakery of believing that the Supreme Court is above politics and then loads as much politics as possible into the appointments. After which point judges, like Roberts, are lifers and can basically say, "F off, I'll do what I want." But to the extent that the vacancy was left hanging because someone thought such appointments should reflect the voting choices of the public is an outright politicizing of a position that was at least supposed to feign to be above politics. The concept that voters should sway how justices get appointed is a joke ... it is not an elected position.
As for Kavanaugh, he's got a cush job for the rest of his life now. But was this that different than, say, what happened under the Reagan presidency with nominating
Robert Bork? Not really. You had a turbocharged #metoo movement underfoot, certainly. And pent-up frustration from opposition that got channeled into hysterics, no question. But many of those questions were fair questions to ask of such an appointment ... especially in light of how we now look back at Anita Hill and the
nomination of Clarence Thomas. There was way too much pearl clutching going on, but appointments like that should have real scrutiny. Even though I had my doubts about how it spilled over into #metoo character assassination attempts.
Well, in other news, I saw that in 2019 Jeff Bezos had 102 lobbyists in the Senate. That's two more than there are appointed senators.
https://www.bloomberg.com/graphics/2019-amazon-lobbying/
"The U.S. Senate: Powered by Amazon Lobbyists in the Cloud" (LaaS, or Lobbyists as a Service)