But if the only defense of Biden is trump is worse, that's still not a reason to not replace Biden with someone better.
Hell, it's a reason to replace Biden.
trump is a major threat to American democracy. We should be running a capable and charismatic candidate against him to maximize the chances of stopping him.
Like, if you're lost at sea, and had the choice of a life raft with radio beacon and supplies to last a month or one of those unicorn ring floats...
Sure. We'd all take the unicorn floaty over nothing, but you'd be insane to insist on it over the raft because there's a shark in the water.