Some people like to say things like that, but it's more accurate to say "this proves our current model is consistent with data". I only skimmed the article (and

Some people like to say things like that, but it's more accurate to say "this proves our current model is consistent with data". I only skimmed the article (and haven't read the actual paper) but it focused on surrounding dwarf galaxies which have traditionally been a problem with these simulations. I'm sure there are still plenty of ways in which these sims do not match our actual universe.