Tbh I still think a senile Biden would handle a national crisis better than the way the Trump administration handled the pandemic. Basically locked down for a year didn't really do anything other than talk about "Operation Warpspeed," which in the end turned out to be them just sitting on their hands and letting the individual states handle the pandemic and hoping they wouldn't need much guidance from the federal government. And watching Biden's speech yesterday, it was a trainwreck... up until he started talking about foreign policy and there you can see he's still sharp, and that's been his strong suit for as long as I've known about Biden. If you compare that to Trump's performance in Helinski, I think despite the horrible flubs that can't be overlooked, he still comes off looking better than Trump.
Let's also not forget Trump has called Nikki Haley "Nancy Pelosi" a couple of times, he keeps talking about Hannibal Lector like he thinks he was a real person (and it's odd how many times he's mentioning how much admiration he has for a fictional character that he seems to think is real),and has gone on many bizarre rants about boat batteries and sharks lately.
But Biden really should step down. A recent survey found that 67% of Americans find an election between Biden and Trump to be embarrassing and wishing that the parties had different candidates. It shows that there's a big disconnect between registered republicans and democrats, who turn out to vote in their parties primaries, and the registered voters with no party affiliation or third party affiliation that don't have a say in the primary process.
They're both totally unfit to be leading a super power, that's for sure. There's been increasing pressure on Biden to step down since the debate, but after the speech yesterday the knives are coming out for him. Most of the country seems to recognise they're both unfit to lead - it looks like one party is talking about how their candidate should probably not run though while the other is all in.
If he drops out, I think the tactical way to announce it would be to do it as close to the RNC next week as possible. They'll have a lot of canned material for trashing Biden that'll need to be scrapped or look out of date, it'll also take some of the media focus off the RNC and put it on Harris or whoever the hell the democrats end up choosing. That makes too much sense though so the democrats will probably do something after the RNC because competence and US politics don't mix too well.