I listen to a podcast that is generally quite opposite of my political alignment, but I usually find it entertaining. One thing these guys believe or at least discuss quite often is that Biden is being given drugs at certain times to "kick start" him for things like the SOTU. So, I don't believe this is anything new.
I'm still surprised people in the US actually vote only for people so old they can't reasonably do the job properly. I mean what's up with that?
I guess the cynic in me thinks only people that old have a lifetime of being beholden to the powers behind the curtain to have their trust to receive big campaign funding. But that doesn't explain Trump. He was never really 'favoured' by the establishment as far as I gather. Not that I think he was a good president of course, don't get me wrong!