Trump had to go. If anyone had any doubt about that, his speech on the morning after election night should have settled it. Biden was perceived as the most electable replacement, with cross-party and centrist appeal, and he was elected. As for the comments about Harris, her success as a candidate in the primaries has nothing to do with her being chosen as Biden’s running mate. The last time a presidential candidate chose his closest competitor in the primaries as his running mate, it was disastrous (Kerry/Edwards 2004).
Biden's handling of COVID-related efforts is excellent; he really effected a needed turn-around, and that's to be applauded.
Also: The US media is absolute utter shite (and I used to defend it and compare it favourably to the UK media). I’ve not been in the US since early 2019 but when I watched the Biden inauguration on CNN I was baffled to see journalists I previously respected talking (and I have to assume thinking) like ten year olds.
Hedgehopper: As far as I'm aware he has [not] been deliberately inciting racism/ misogynistic/ disablist/ the anti vac movement… Biden is absolutely enabling misogyny and some of his key policies are misogynist. He’s not, as far as I have seen, out to target women specifically - but he also completely ignores the (significantly negative) impact of his policies on vulnerable women in particular and women in general. Biden simply doesn’t care about women at all. I suspect he doesn’t think we’re fully human. But that’s a pretty common view, even among women, so it doesn’t do him much harm.
Also keep in mind when looking at US politics from the UK: every single one of the fifty states has substantially more rights within the federal system than devolved administrations have within the UK framework. And it is baked in to both major parties to defend “states’ rights”. Just for example, Scotland has considerably less autonomy than Rhode Island. So you see a lot of organising at the state and local level, which tends not to get reported internationally, and sometimes US activists just let the federal level run because they’re focused elsewhere.