They tried their best to knock him off-message. He didn't budge.

You mean the questions he was issued in advance, along with the acceptable answers? Admittedly it is impressive that a drooling dementia patient managed to make it through a completely rigged press conference. I bet they had him drugged to the gills in order to accomplish that much.

My God! You truly are deranged. WTF is wrong with you?

It was a farce

https://www.washingtonpost.com/opinions/2021/03/25/biden-excels-his-first-news-conference-media-embarrass-themselves/

Um your link does no good, we dont subscribe to rags, and the link is a pay wall.