  We do not solve tensions with concordance cosmology; we do obtain $H_0\approx
74\,$km/s/Mpc from CMB+BAO+SN data in our model, but that is not the point.
Discrepancies in Hubble constant values obtained by various astrophysical
probes should not be viewed in isolation. While one can resolve at least some
of the differences through either an early time transition or late time
transition in the expansion rate, these introduce other changes. We advocate a
holistic approach, using a wide variety of cosmic data, rather than focusing on
one number, $H_0$. Vacuum metamorphosis, a late time transition physically
motivated by quantum gravitational effects and with the same number of
parameters as \lcdm, can successfully give a high $H_0$ value from cosmic
microwave background data but fails when combined with multiple distance
probes. We also explore the influence of spatial curvature, and of a conjoined
analysis of cosmic expansion and growth.
