Because Trump is the inherently corrupt, wholly unfit for public office, and a colossal national security threat while in the White House.
Also, my party, the Republican Party, has mostly decided that is acceptable. So it’s not only Biden. It’s literally whoever opposes anyone and everyone who ever supported Trump. I will be voting against all Trumpists until they are all gone.
And if you think it’s curious that Trump lost so badly when he had 90% approval in the Republican Party, you are missing the point. Millions of us went Never Trump, and stopped answering our emails from the party. So any poll that claims 95% of Republican support is absent millions of Republican voices. Because we left.
The incredible shrinking party.