Fortas was filibusterd. I don't know why. But I do agree with your persistent statement that the DEM Senators have precipated a hiterhto unprecidented event.
You get the last word.
Fortas was filabustered(by democrats by the way) for becoming Chief Justice of the Supreme Court due to well documented unethical behavior, he was already on the court, and got his vote on the Senate floor when his nomination for his intial seat on SCOTUS. He probably would have been impeached if Johnson hadn't withdrew his nomination and his subsequent resignation.
Nothing of the kind happened with Estrada. His nomination was filabustered for purely partisan reasons.
That's the difference. The Senate demos basically impeached him without any credible evidence. And that is the travesty.