ADDED: I withdraw my previous objections due to finding evidence of Trump era office having this flat lighting. I was wrong and I admit it. ---------------- old material below

Of course. However, the Oval Office has a ceiling and painted walls. They affect certain qualities of the lighting in ways that an open roofed set does not! One can see this if one has worked on sets. In the real office one can bounce light off the ceiling and this gives particular qualities to the smoothness of lighting. In a set with open roof, lighting has to be diffused in certain ways with gels or umbrellas, and this quality is visible if you know what to look for. That's why I noted the texture on the flag and other things. Another thing is, when you light for green screen, you have to light flat or else hot spots show on the green screen, affecting quality of the matting / overlay. The Biden shots show they lit flat probably to assist this. (On the other hand, today's LED light boxes for video are inherently flat without big hot spots anyway.)