Ah, that is Zuckberg and Schrep embracing the open floor plan by commandeering a conference room for a small two person meeting.

'Open floor plan' doesn't mean there's no leeway if you want to have a private discussion, or a meeting with more than 2-3 people for more than 5 minutes.

So they invented a conference room or office that can't accommodate those with mobility issues?

"Someone clear a path for the wheelchair!"

Really? We're that politically correct now that we can't have a joke meeting-room-ballpit to celebrate the opening of a new building without offending someone?

The Americans with Disabilities Act exists for a reason. It's not about being "politically correct", it's about accessibility. And yes, it's the law.