If that's the case, my next question would be who the incompetent is running that job. You have the President of the United States walking in open air who can't use certain entrances in the White House? No, whatever work you're doing there, you schedule for a time when the President isn't around or you break up the work you're doing into smaller chunks you can rapidly complete. No US President should ever be blocked from using whatever entrance to the White House is closest or most convenient. That's a real safety concern.
But this still seems a bit off, given Biden's history of visible mental decline. If we didn't have any other evidence of cognitive problems with Biden, it would be much easier to write the whole thing off with your explanation. If it were President Trump, I would absolutely assume that's the case. Even Obama I would have a hard time seeing him just wandering onto the lawn. But Biden? I can see that. It would be great if more angles become available so we get a more complete picture of the context around this.
Regardless of my point, I agree that it’s revealing that Joe needs to be led around as if he’s a child....or demented adult.