I suspect the following fits squarely into the category of "plausible BS", though I'll hold my final verdict until someone far smarter than me to fails to prove it (yet still writes an eventual bestseller based on the theory). But doesn't it seem like the pandemic response was the decisive factor in the election?
Here's the chain of my thinking - the response was mailed in from the start, which increased the appetite for safe voting options, such as the mail-in ballot; states that have used mail-in voting in the past have seen major increases in voter turnout, which was a significant factor in tipping the final result. Don't they always say a higher turnout would favor the left? Your move, talking head.