The problem is that the gaffes are just the tip of the iceberg.
Many prominent Biden allies are pushing for him to step down. It's not the media or George Clooney- its Congressmen. It's a crisis when many of your closest allies question your ability to do the job.
Democratic candidates are crying as they leave "reassurance" meetings with Biden. They understand better than anyone else that their election chances are dire with Biden as an anchor at the top of the ticket.
It's a crisis when the Republicans are on track to control all 3 branches of government in a few months.
If Joe Biden wanted to suddenly find an ethical path, he should start with Gaza.
This proposal is not a sign of newfound morality, it is red meat to his base that are desperate for any signs of life. It's easy to make promises like this when you never have to fulfill them.