  In a recent paper [Carcassi, Oldofredi and Aidala, Found Phys 54, 14 (2024)]
it is claimed that the whole Harrigan--Spekkens framework of ontological models
is inconsistent with quantum theory. They show this by showing that all pure
quantum states in $\psi$-ontic models must be orthogonal. In this note, we
identify some crucial mistakes in their argument to the extent that the main
claim is incorrect.
