Yes that's a fair point. Though I think to a degree.
But there is so much that you can adjust via speaker positioning/room acoustics, especially when we are talking about things like an assertive treble, that it makes sense as a first step before trying to "fix" it with gear that may or may not come close to doing so.
On the other hand, I don't think I'd get exactly what I get from my CJ tube gear vs a solid state amp, strictly from changing speaker positions.