That's not the scenario I am talking about. I am talking about Mitch Dobrowner ONLY offering his latest stuff on inkjet print and museums (if they fancy his stuff) would gladly take them.
If your complaint is that Magnum is misusing the phrase "museum quality", while you have a point in the Capa scenario, most new Magnum photos are now from digital cameras only and no museum is going to say, "Oh sorry, David Alan Harvey, we can't take your prints because it's inkjet, can you do a silver print instead?"
While I am a nobody in photo world, I do know some "name photographers" and what I said is based on what they told me as their their experience, plus what I hear from gallerists and museum curators, and people like Mary Virginia Swanson, in places like portfolio reviews at PhotoLucida, Santa Fe Review etc.