In a recent paper (A. Fring and T. Frith, Phys. Rev A 100, 101102 (2019)), Dyson’s scheme to deal with density matrix of non- Hermitian Hamiltonians has been used to investigate the entanglement of states of a PT-symmetric bosonic system. They found that von Neumann entropy can show a different behavior in the broken and unbroken regime. We show that their results can be recast in terms of an abstract model of pseudoHermitian random matrices. It is found however that, although the formalism is practically the same, the entanglement is not of Fock states but of Bell states.