Why do you prefer this? From my perspective, hiding the “numbers” in a game makes the world more immersive, so I see it as a positive. Interested to hear your opinion.
It saves you a trip to the planet just to be instantly killed there. So it may be there to reduce frustration. Personally I would prefer if there were just hints about the level though, not rough numbers.
I’ve played Skyrim since release, but the mod that keeps things interesting for me is undoubtedly Requiem. Requiem uses unleveled world similar to this, but the encounter zone difficulty is hidden from the player. While this is fairly immersive, I think it’s frustrating for new players. “Why can’t I kill draugr? Why are mages one shotting me?” Etc… So this is probably a design choice to make the game accessible.