Well sure, if you believe that room magically stops influencing speaker's response at transition frequency like it hit the invisible wall, well whatever rocks your boat I'm fine with it.
I said no such thing. All I've said is I agree with the research as I have no scientific basis from which to disagree with it. You don't either, but that hasn't stopped you from disagreeing with it.
Of course the room influences a speaker's response all the way up. I agree with the research that says at high frequencies our ears separate direct and early reflections from late arriving reflections--which is why many who do EQ at low frequencies, will not EQ at high frequencies based upon the steady state room curve--possibly messing up the direct sound to "fix" late arriving reflections. So if that's your standard for "using room EQ," then you are correct to be skeptical as most of us don't agree it's generally the right thing to do.