  In two recent papers Khrennikov uses what he calls Ozawa intersubjectivity
theorem 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 papers, I explain here
why Khrennikov proof is not valid but in contrast with one of these papers, I
criticize the way intersubjectivity is dealt with in QBism.
