Fair. I also lean towards the maximalist camp; for fantasy games, I prefer class approaches like Shadow of the Demon Lord/Weird Wizard, where there are dozens of class options that open up during the leveling process, or Fabula Ultima, where there are a dozen classes but multiclassing is required.
I think to make psionics work for a class minimalist, it requires a change to the underpinnings of the cosmology, such that psychic powers have a home akin to divine or arcane powers. Class minimalists, to me, shares some aesthetic preferences with Great Wheel devotees; there's an appreciation for symmetry and a desire to have everything fit into a certain place. Class maximalism is more akin to the World Axis, there can be as many classes as there are domains in the Astral, each one telling its own particular story.