This is probably a way overly optimistic article for Democrats. Plus the same article makes the case that Trump will win if you keep reading it.
But here is one thing I have observed:
1. Most people who have an “unfavorable” view of Trump will not vote for him under any circumstances.
2. A fair number of people who have an “unfavorable” view of Biden (young, over the top progressive, anti-Israel, etc.) may hold their nose and vote for Biden over Trump in the end.
Democrats might still have a better chance with someone else, but who?