One person's 'depth' is another person's 'busywork'. I'm certainly in the latter camp when it comes to NMS, because it seems to focus on quantity over quality. Tons of systems, tons of stuff to see on tons of planets, tons of items to craft with tons of materials that need to be gathered, and you get to do that with plenty of toys (ships, vehicles, freighters, etc.).
But at the end of the day I don't really enjoy any of it because the variety is only superficial - planet XYZ might be my personal discovery, but it exists in ever so slightly different versions elsewhere, same goes for a given species of fauna or flora. It all feels like it's coming out of a huge Lego set box, things are mixed and matched at relative random to give that illusion of variety.
The mechanics underneath controlling your toys are very simple, there isn't a skills progression curve I noticed. Think Mario Kart controls. They work as intended but they don't feel satisfying to master, as there is nothing to master to begin with.
Whenever I play NMS I feel like I play a proc-gen demo with a relentless looting/crafting framework attached to it. There is no sense of 'place' in this game, unlike Elite, also because you can basically restart a mission you triggered in another system, in the current system you're in - these kind of gamey mechanics might be convenient to the casual player but don't work for me who wants a coherent game world to experience.
The only reason I play NMS now is to see what its procedural generation tech can do - and even that becomes old very quickly because while there is some variation in its environments, it's still all quite similar all the same and each world is filled to the brim with content, in as much that you walk 200m and come across the majority of species in a given world, giving a very crammed feel to them. To me that's not exploration, that's just ticking boxes on a to-do list.
Minecraft is a much better comparison to this than Elite really (in order to remain fair towards NMS) - especially when you see what Frontier have done with Odyssey; I'll be spending even less time with NMS once that releases, as at least NMS was able to scratch my Space Feet itch (with a physics and graphics model I don't particularly enjoy), but that'll no longer be the case as Odyssey dumps on NMS Legs from great height as far as my preferences regarding a space game with walking mechanics are concerned.