I get the concerns, but I'm not sure that's as great a threat as Thompson says.
1. The real threats (China, Russia) probably already know the layout of the Capitol building and the WH.
2. Call it whatever you want, but the participants on Jan 6 were disorganized, had no plan and are highly unlikely to know or figure out routes and camera placement without seeing them first hand.
3. I have to believe security protocols have already been reviewed and adjusted accordingly. If they haven't, someone needs to be fired.
From WaPo