Hard to tell Biden’s health. Unfortunately, voters were not given a lot of chances to evaluate his thinking or, more importantly, his positions. Best chance when he offered a contest with a “fatty” in Iowa, but there was no follow-up.
Presumably, he has a lot of “reasonable” positions, but this is guesses, as he mostly refused to answer any questions that will divide his coalitions of centrists, neverTrumpers and extremists of different flavors. The fact that society in large part went along with such uncontested election is a sad phenomenon.