No, he’s not foolish. For the same reason that Congress didn’t postpone the electoral certification to another day and didn’t meet in an “undisclosed location” for the vote…
Fuck 'em. Traitors and insurrectionists don’t get to dictate how the United States welcomes a new President. They don’t get to think they’ve intimidated a civilized nation into hiding away from them.
Biden should proceed with a public inauguration in front of a large a group is possible with Covid restrictions. And we should celebrate, as a nation, the successful transition to a democratically elected responsible adult after four years of a whiny toddler-in-chief.