Luminosity Evolution in Supernova Cosmology

Early-type Host Galaxies of Type Ia Supernovae. II. Evidence
for Luminosity Evolution in Supernova Cosmology
https://arxiv.org/abs/1912.04903

The authors statement:
'We argue, therefore, that this systematic bias must be considered
in detail in SN cosmology before proceeding to the details
of the dark energy.'

Such a statement is revolutionary on its face.

Is this going to bend the arc of cosmological science?

Richard