> its distribution has to be consistent with gravity acting on an initially almost-uniform distribution with small cosmological perturbations That may be a res

> its distribution has to be consistent with gravity acting on an initially almost-uniform distribution with small cosmological perturbations That may be a restriction that some may operate with, but it is non-obvious why only models obeying this restriction are to be allowed. Some people do not care about cosmology and want to fit just rotation curves. And even if someone does care about cosmology, why would initial uniform distribution would be the only acceptable one?