  In their recent study, Labb\'e et al. used multi-band infrared images
captured by the James Webb Space Telescope (JWST) to discover a population of
red massive galaxies that formed approximately 600 million years after the Big
Bang. The authors reported an extraordinarily large density of these galaxies,
with stellar masses exceeding $10^{10}$ solar masses, which, if confirmed,
challenges the standard cosmological model as suggested by recent studies.
However, this conclusion is disputed. We contend that during the early epochs
of the universe the stellar mass-to-light ratio could not have reached the
values reported by Labb\'e et al. A model of galaxy formation based on standard
cosmology provides support for this hypothesis, predicting the formation of
massive galaxies with higher ultraviolet (UV) luminosity, which produce several
hundred solar masses of stars per year and containing significant dust. These
forecasts are consistent with the abundance of JWST/HST galaxies selected
photometrically in the rest-frame UV wavelengths and with the properties of the
recent spectroscopically-confirmed JWST/HST galaxies formed during that era.
Discrepancies with Labb\'e et al. may arise from overestimation of the stellar
masses, systematic uncertainties, absence of JWST/MIRI data, heavy dust
extinction affecting UV luminosities, or misidentification of faint red AGN
galaxies at closer redshifts. The current JWST/HST results, combined with a
realistic galaxy formation model, provide strong confirmation of the standard
cosmology.
