It may be tax cut, but the messaging hasn't led a good bit of the public to view it that way. People got more money back in their paychecks, but less of a tax return. Sure their net money in their pocket was more, but it didn't feel that way to a lot of people. So I doubt everyone who hears about Biden wanting to end the Trump tax cuts see it as raising their taxes. Such is the world when the voting public doesn't really pay attention to details.
So morons who don't understand basic logic or math will vote Democrat?