There does not seem to be widespread censorship happening among Biden-friendly news outlets:
Congress' Democrats in "state of shock" over Biden debate performance https://www.axios.com/2024/06/28/house-democrats-biden-debat...
It’s time: The Democrats must replace Joe Biden with California Gov. Gavin Newsom https://www.sacbee.com/opinion/article289600484.html
Ditch Biden. That Debate Performance Was a Disaster. https://newrepublic.com/article/183242/joe-biden-debate-perf...
Democrats consider the unthinkable: It’s time for Biden to go https://www.politico.com/news/2024/06/27/biden-democrats-rep...
Who Won the Debate? Biden Stumbles Left Trump on Top https://www.nytimes.com/2024/06/27/us/politics/biden-trump-d...
The NYT piece includes these quotes from Biden allies as well:
Kate Bedingfield (Mr. Biden’s former White House communications director):
“It was a really disappointing debate performance from Joe Biden. I don’t think there’s any other way to slice it. His biggest issue was to prove to the American people that he had the energy, the stamina — and he didn’t do that.”
Andrew Yang:
“Look, I debated Joe 7 times in 2020. He’s a different guy in 2024.”
Steve Schmidt (co-founder of the Lincoln Project):
“Joe Biden lost the country tonight, and will not get it back. If Trump is a threat and democracy is on the line, then Biden must step aside. His duty, oath and legacy require an act of humility and selflessness.”