For sure! I used the word "perhaps" because I'm in no position to judge such things. You seem to be alone in your thoughts on this and good on you not to persuade folks to use loading of a cartridge to make your phono stage sound good, rather, letting it stand on the design merits alone. Of course, I see why you have made loading a possibility because some folks probably are just conditioned to or insist on doing it.
Question - any benefit of having the loading terminal option removed from my MP-3? Might its existence allow for noise?