The debate was shocking in that whatever cocktail of drugs they've been giving Biden are no longer working. We've seen his mental decline for at least a couple of years, but they've been able to medicate him enough to get him through important speaking events.
That's no longer working.
Look at his March 7 State of the Union speech. Biden spoke (read from the teleprompter) for 65 minutes. Yes, he was just reading, but he didn't mumble and he was able to do it for over an hour. Heck, it's hard for many 80-year-olds to just stand up for 65 minutes without sitting.
The State of the Union was an amazing performance considering his known mental decline. It's been less than four months, but his decline since March has been shocking. Whatever drugs they are using are no longer working.
If he was this bad with a week to prepare, can you imagine what he's like when he's not in public and drugged up?