Marc no; it's not just you. And this phenomenon (opining in ignorance) is hardly limited to the fundamental hardware per se. Some examples...
"I have never experimented with upgrade AC cords, interconnects, speaker cables, line conditioning, dedicated AC circuits, fuses, NOS tubes, but undoubtedly they all sound the same".
"I never sampled various racks, shelving, cones, footers, contact cleaners, record washes, static neutralizers, room conditioning, but undoubtedly they all sound the same".
"I have never tried x,y,z, because how could that possibly make any difference at all? It can't because I said so".
And I always like to sum it all up with my standard rebuttal: "All Doubting Thomas's sound the same".
"I have never experimented with upgrade AC cords, interconnects, speaker cables, line conditioning, dedicated AC circuits, fuses, NOS tubes, but undoubtedly they all sound the same".
"I never sampled various racks, shelving, cones, footers, contact cleaners, record washes, static neutralizers, room conditioning, but undoubtedly they all sound the same".
"I have never tried x,y,z, because how could that possibly make any difference at all? It can't because I said so".
And I always like to sum it all up with my standard rebuttal: "All Doubting Thomas's sound the same".