Well I don't think it's impossible to be a good politician. But I don't think politician should be a career path. And more that politics should be local and hierarchically flat. Once you start having middle managers etc. Those above them become far too insulated.
You will always have people falling into leadership roles. And there's nothing wrong with that. But they need to be close to the people they lead and answerable to them.
And I can agree that over the last decade plus Biden has had a good amount of growth as a person. Which is always a good thing. He and most Democrats are unfortunately still highly inadequate for what's needed to be done. But growth is always good.
Which is fair. But you have to assess. Who else is likely to get in. Is there anyone else besides the Republican? If there is let's get behind them and push them. But if there isn't as sucky as this may be a right-wing Democrat is still better than an outright fascist. Although they shouldn't be left in for more than one term at most. We should start lining up someone to primary them in the very next election. They don't get a pass just because they're not Republican.