When it comes to the barren planets, it just adds a bit of immersion IMO. Nobody is forcing you to visit those rocks, and you probably won't ever land on most of them, but it's cool that you can. So to me, it's not something that has a negative effect on my enjoyment of the game.
Makes sense to wait for a sale though. Mods and updates will no doubt vastly improve the game. Personally, I just play it on gamepass.
It's similar, though the the actual points of interest are way more fleshed out than in NMS and sometimes have unique quests etc.