I hear topics of analysis of distribution of galaxies from time to time and always wonder how we can actually measure this distribution in any sensible way? What I mean is: Information reaches us at max the speed of light. Information about galaxies from millions of light years afar contribute to the distribution model. Thus the model incorporates spatial distributions of objects (=galaxies) which are certainly no longer true as of now.

Put differently: When we assume the big bang and assume further as a thought experiment that mass expands equally, the model would requires to account for information from early objects, where mass distribution was different. Otherwise the conclusion would be drawn that mass is unevenly distributed.