This new paper demonstrates that their model can fit a part of the observational data, including parts that could not be explained by the previous models using

This new paper demonstrates that their model can fit a part of the observational data, including parts that could not be explained by the previous models using dark matter. As the authors state in the summary "it remains to be seen if the new model is consistent with the CMB power spectrum, the Big Bang nucleosynthesis of light elements, and other critical observations". Maybe this model will be contradicted by further work or maybe it will be confirmed. In any case such models must be searched and studied, because the explanations based on deus ex machina, i.e. on dark matter and dark energy, are not good enough, because they lack predictive power. Adding an arbitrary and unconstrained distribution of gravitational field over the entire Universe can match an arbitrary mathematical model of the gravitation, so it cannot be used as an argument that the current standard model is valid. Only if another means of detecting the dark matter, except by its gravitational influence, were discovered, than that could constrain the distribution of the dark matter, so that the supposition of its existence would be converted into a valid model with predictive power.