https://www.justice.gov/storage/report-from-special-counsel-robert-k-hur-february-2024.pdf

from page 10:

We have also considered that, at trial, Mr. Eiden would likely present himself to a jury, as he did during our interview of him, as a sympathetic, well-meaning, elderly man with a poor memory. Based on our direct interactions with and observations of him, he is someone for whom many jurors will want to identify reasonable doubt. It would be difficult to convince a jury that they should convict him-by then a former president well into his eighties-of a serious felony that requires a mental state of willfulness.

**(interestingly enough, Eiden looks exactly like Biden on the PDF)

Basically the special counsel feels that he could make a jury believe that to be the case. If so then how can this feeble old man run a country?