Trump gets a pass because he's clearly more with it than Biden, period.
This fall I had 2 kids that were terrible athletes/football players on my youth flag football team. One kid listened but couldn't throw, catch, anything. The other kid didn't listen, didn't follow instructions, hit other kids, complained all the time, etc.
We spent about 50% of our time keeping the one kid on track, and the other 9 kids, including kid one got less focus. Well about week 3 the kid who was a total disaster quit. Really his parents pulled him out which was another story altogether. Well then suddenly the other kid was CLEARLY the worst player on the team, not an athletic bone in his body. His weaknesses were suddenly highlighted because we had time to spend with he and the other kids.
In this story Biden is the complete disaster kid who doesn't listen, everybody sees his weakness because it's so much worse than Trump's. If Biden were out of the picture, it'd be a different story.