I am not saying it is actually a Boson but a peculiar spin-1/2, 2π-symmetry fermion. It just happens to share the same 2π-symmetry characteristic photons have.
If we assume neutrinos to be Majorana fermions then they must be also their own antiparticles similar to photons therefore by definition neutrinos must obey a 2π spinor symmetry and not the 4π.
I mean being your own antiparticle doesnt mean you would necessarily have 2π symmetry it again depends on if you are a fermion or a boson , fermions are solutions of the dirac equation while bosons are not.