collective myopia 

the post-debate discourse implies that those close to biden couldn't have possibly expected that the outcome of the debate would be the party and the base's cry for candidate swap. yet they somehow initiated a debate 2 months ahead of the debate schedule. 

as individuals we do ok with theory of mind but as groups we have such a hard time thinking the outcome might've been expected to those that could have influenced it prior to it happening.

translation for this channel:
- they knew biden would lose and they'd have to switch him out for a proper chance. 
- they couldn't just swap him out: either because he wouldn't let go, or the voter base would be confused. 
- they did a debate 2 months early to get the public to cry for his swapping.

your assumption aren't unfounded! America never has debate in june its always in september! 

So maybe they premeditated this outcome, and now want to do damage control.