Really? You can’t fathom how someone would consider NMS a better game? Both games are barely comparable other than using space as a backdrop. Judging by the reaction online, it seems like many people were lead to believe that Starfield would be a space sim and came up wanting when it was more of a sci-fi Fallout, with mostly optional engagement with the space elements. For those people, I can see merit in recommending they check out No Man’s Sky, which has a shallow, bit widely-spread space simulation to engage with.
I don’t think it’s useful to try and argue which game is better, but I would much rather play No Man’s Sky any day of the week. Bethesda RPGs have long lost their luster for me since the Oblivion days, and now just stand as a testament of disappointing writing, stagnant technology and under-baked systems. Starfield does not show any meaningful signs of breaking the norm.