dude is almost 80. there's no way he can be sharp and on point most of the time. he has been caught out there looking confused or not on topic. that said, the optics were easliy twisted to fit the agenda, but this isn't the dementia alzheimer moment people are making it out to be. he didn't know where to exit, but it looked bad. there's videos of this happening with dubya and chump.
that said, seeing barack out there last week looking sharp as a tack and controlling the room is a stark contrast to both biden and chump. got them old white dudes looking like darth sidious shuffling around in a retirement home.