  In the recently published preprint arXiv:200.02610 Eltsov and L'vov
calculated the amplitudes of waves in the Kelvin-wave cascades. This returns us
to the rather old, but still unresolved dispute on the role of the tilt
symmetry and the locality in the Kelvin-wave cascade. The estimations by Eltsov
and L'vov show that the possible nonlocality of the energy flux in the
Kelvin-wave cascade has no essential effect on the Kelvin-wave cascade in the
3D vortex tangle.
