It's a no-brainer, people have more discretionary money to spend. The economy of "wants," skyrocketed (i.e. cars, electronics, eating out more, new cloths, etc.). The one thing we don't know yet, is will the federal government make enough money off a stimulation in buying power and subsequent job growth, to bring in the tax revenues necessary to maintain the cuts. That's always the number one concern when reducing tax brackets, but so far, so good.
The bottom line is Biden is attempting to re-write history and although some liberals will easily buy into it, they can't run from the truth. There are currently 24 Democratic candidates running for President and all of them have the challenge of diminishing Trump's economic record. The thing is, no president has lost a re-election campaign with such solid economic numbers. I'm not saying it won't happen, as Trump has a tendency to sabotage himself, but I wouldn't bet on him going down. I didn't even think he'd win the 2016 primary, so I've learned not to bet against him.