I'm baffled by the claim that live debugging of this sort was ok in 2018. That wasn't that long ago. In 2018 we definitely knew this was a terrible idea.

The stack described in this article would not have been extremely stable if memory serves. It seems likely to me the setup is one server, one client. In the live TV setting described, these sort of tactics seem like a decent trade. There’s a director of the show who can work around any technical problems encountered on the big board.