Yes, I would think moving a lot would help to keep the clutter under control.
I just can't part with my university stuff. Heck, I still have all my math notebooks from high school with perfect handwriting. Each class from community college is in a color-coded folder and each of my university level classes has its own binder, labeled by section number on the spine.
It's neat and orderly and I have the space for it, so is it excessive? I refer back to it enough that I feel justified in keeping it. And, knowledge is important to me, so it feels important.
I do need to get rid of old materials and lesson plans from the old curriculum which is a lot of sorting. It takes sustained mental effort to scan each paper and make a decision on it when the piles are very deep!
But, yeah, I need to fire up the burning barrel!