Well, sure. And Starfield follows in the wake of Fallout 4's lackluster RPG experience, offering shallow conversations and the illusion of choice. After Fallout 4, I'm not sure I can get myself to play another game modeled after the same system of "Would you like a quest? [Yes/Yes but sarcastic/One question first then yes/Maybe later]". If the story is railroaded, Starfield and NMS aren't too different then - there's a main quest line, with things to learn and people to meet, and you check off the boxes until it's done.
But as to whether they should be compared, I think it's unavoidable. There's too much overlap, and no other games like it. Games in which you can customize a space ship, explore thousands of planets, make a home base on any planet you want, and are incentivized to explore and find new places and meet new people? NMS, Starfield, Elite Dangerous, maybe Star Citizen. With some similar gameplay elements and a small pool of games, comparison is natural and expected. Nothing wrong with that.
Most of what I see as 'issues' are personal preferences. Stuff like railroaded dialog choices even worse than Fallout 4, or stiff/awkward voice acting, or landing on planets being randomly generated despite claims otherwise. But as for actual issues, two things stood out to me: spaceship flight is very dangerous because bumping into things has a good chance of bugging the physics engine and killing you instantly (but other times, barely even registering damage). And seeing a player get stuck because they got a bounty without even knowing it, and then the bounty was making them shoot-on-sight by guards and them having no clue how to deal with the bounty. I'm sure there's a perfectly simple way out of the situation, but without any communication to the player, that's nothing but frustration. Add in broken NPC pathing/animations (people getting stuck inside objects like bar counters), making it all-too-easy to fall down ladder holes in ships, and horrible performance optimization (with Todd Howard being quoted telling people to just buy better computers), and I think it'll need a bit of polish before really considering giving it a shot.