Impact of neutrinos on the matter power spectrum compared to one of the redshift reduction models we probe in this work. We represent the ratio of the power spectra when compared to the ΛCDM case with massless neutrinos noted as P₀. For readability, we have removed a large part of the y-axis. Neutrinos induce a scale reduction of the matter power spectrum, while the power spectrum reduction model is scale-independent. Additionally, the orders of magnitude are significantly different: for neutrinos with a mass of 0.1 eV, the damping amplitude is about 5% at maximum for the smallest scales. This is one order of magnitude below the effect of the power spectrum reduction.