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If by "we" you mean "product design teams for speakers," then yes that's part of it, along with smooth off axis response.
This is a large part of the value in being able to see these spins, imo. The way I see it, different rooms don't change the target; they change the way in which the target is obscured. If we compare it to basketball, one room might be like trying to hit the 3 with drunk goggles on, and another room might be like trying to hit the 3 with no contacts(or glasses), but the target remains the same. Seeing a spin for the speaker you own before designing your EQ is kinda like putting your contacts on, and not having to wear drunk goggles before shooting your shot.
Without studying the measurements in detail, I would want to know the effects on the total sound. There is room to improve most passive loudspeakers by tailored active equalization based on a family of curves, because active EQ can effect changes passive components cannot. However, applying that EQ based solely on the on axis or listening window measurements is a mistake. Generally, I would say speaker EQ (midrange and treble) should be independent of the room. I am sure there are exceptions to that though.
I agree.