The specific itches that SC scratch clearly better than other spaces games is giving the sense of beeing a human in a ship.
ED, NMS and Eve have strong features but the second you are in the ship, you ARE the ship. In SC, you are always a human in a ship. This sense of being a human is also greatly enforced by all the small human tasks you can and have to do. You never feel more human than when you have to remove in urge your helmet and drink a bottle of water because you are dying of thirst.
Having to remove your helmet to drink water because you are dying of thirst is just annoying in a space game to be honest. Especially when your drinking animation breaks every other time you try or die by falling through the floor instead. In a space game I want to feel spacey things, not that “I am human”.
But just so to stress that your argument does not mean much, let´s play that
game. We can actually use any game. Copying your own words, you could also argue that:
The specific itches that ED scratch are clearly better than other spaces games, in giving the sense of being part of a real galaxy at full scale where you have complete freedom and control to navigate and steer your ship at super luminous speeds. SC just has one solar system and the second you step into it you ARE already limited by its dwarfed scales, no real celestial motion simulation to speak of, an arbitrarily restricted waypoint based navigation system and a complete lack of exploration mechanics. In ED on the other hand you are part of an actual full scale environment with actual celestial motion simulation. This sense of being part of an actual real universe is also greatly enforced by all the cosmic and planetary phenomena you encounter, black holes, neutron stars, lagrange clouds, interstellar void life forms, actual and real catalogued celestial objects in the milky way that you can in fact fly and visit such as VY Canis Majoris, the Pleiades, Sagitarius A* or even our own solar system bodies. You never feel more immersed in a space game than when you have complete freedom to fly wherever you want to explore in a real simulation of a full galaxy based in actual astrophysics principles and real data, and where some of the sites you visit will literally be unique, where no other player or developer will set foot ever.
And that is just one example of one of the itches in one game alone that SC can not scratch. We could also go to extend that to the multiplayer, humongous instancing and org features in EVE, or the crafting possibilities in Space Engineers (where you also have a great sense of
"being a human in a ship" by the way, plus you get to build it even) or the tons of different biomes and base building possibilities in NMS, or the great economic and manufacturing simulation in X4 or... Most of those games actually offer to scratch many more itches than these, and SC simply can not and probably will not.