It’s really a perspective change to just measure from one spot, but mapping the room in 3D and capturing the acoustical problems of the room from every perspective. This way you can address the problems instead of ‘over’ correcting. If you only measure at one spot, you get some information and you might correct everything or the DSP will correct everything because it sees everything as a problem.
The more you measure the room, the better we understand what’s the loudspeaker like and what’s the room like. This helps understand what needs to be addressed and what not. You get a much better result this way, that not only solves the problems, but also actually sounds better.