No he is not okay. Biden is clearly suffering from advanced cognitive decline. Could be Alzheimer's, could be another type of dementia. I say this having had a father who died of Alzheimer's, and I see EXACTLY in Biden the same progression as my father had.
People who end up with Alzheimer's don't begin to show signs of the disease for as much as 20 years after it starts. The brain slowly begins to lose the connections to process everything, but that being said, the brain tries very hard to 're-route' the connections, and does a good job for a long time. But eventually it progresses to the point where the person forgets everything and everyone they know, they forget how to walk, how to talk, forget how to eat/swallow, and then it is over. But in that process there comes a time where the person has some good days, and some bad days. So, don't be fooled by Biden's good days---which he still has, because the progression will be more and more bad days eventually than any good days.
I saw Biden give a speech recently and he appeared fine. But a day later he was shuffling as he walked, sounded a bit off the mark, and there was a befuddled look in his eyes. My father was the same way. So, the man is not okay, and I don't make fun of his condition, his politics have always sucked, but just like Ronald Reagan showed decline in the 2nd half of his 2nd term, Biden is doing so now---even worse.
No way Biden will complete his full term judging by his rate of decline. The dems are just holding onto him until after the coming mid terms, because to push him out now, would just make the mid term elections even worse for them. But he will be moved aside by Spring of 2023.