In two recent papers Khrennikov [1, 2] uses what he calls Ozawa’s intersubjectivity theorem [3] to claim that intersubjectivity is necessarily verified in quantum mechanics and to criticize QBism and more generally all interpretations that are perspectival. In agreement with two previous QBist’s papers [4, 5], I explain here why Khrennikov’s proof is not valid but in contrast with one of these papers [5], I criticize the way intersubjectivity is dealt with in QBism.
