1. You're right, we will know more after people who know how to get good data and make sense of it weigh in. That's none of us here.
2. I'm not sure why Trump not campaigning on the economy doesn't tell us much. Here's what I see:
A. Trump runs virulently racist campaign for president in 2016. Wins. People look at the data. It was actually about race, and not about "economic anxiety."
B. Trump runs less virulently racist campaign in 2020. That's because most of the racism was aimed at China and Americans just don't respond to that distant racism nearly as much. Loses, although for a number of different reasons.
C. Trump runs the most vitriolic, racist campaign for president we've ever seen. Spends almost all of his time with incredibly nasty, mean-spirited and outright racist lies that would make Bull Connor blush. Wins, by a bigger margin than 2016.
So I predict that the data is going to show something similar to A in situation C. I don't know it for sure, obviously, but I'll bet that's what we find.
3. I can't comment on your point about Covid shutdowns. nycfan made a similar point some time ago. It's an interesting thought. I'm ill-equipped to evaluate it.