I agree with what you said about "For me, it's not about the originality of the concept, it's about the way in which it's used." How something is used is part of creativity and originality. Computers, aliens or spaceships are part and parcel of Science Fiction and it would be incredibly difficult to invent an original genre. I have seen this concept and I've seen it used better, and that's what my review is about.
The accoutrements of Sci-fi (robots, FTL, aliens, etc) are not the same as tropes. That's like saying a sword is a trope for a Fantasy novel. Those are props, setting elements, characters.
Tropes are conventions, things that get commonly used over and over as concepts. Like "AI becomes self-aware" or "Five man band" where there's a hero, a snarker, a smart one, a strong one and the relationship one. It's not just a character, but a common character arc. It's not just an existing item like an alien, but a plot-arc featuring aliens that is common, like the peaceful source of wisdom (ET, Yoda) or hostile (Predator, Aliens).
I've read this trope before, and better. That's a valid critique. That doesn't change the fact it's good writing, the same way Harvey's makes a good burger and isn't McDonalds. But can't we invent something that isn't a burger?
I don't make assumptions about other people's reviews. I saw people were enjoying something and I was looking for something good to read. It is good to read, just not something I can personally enjoy because of over-exposure to similar things. That's worth saying for people who have similar exposure, or want to check it out to see if they disagree. That's why I strive for intellectually honest and emotionally honest reviews, so people always know where I stand and why. My reviews have a character which I am being true to by saying what would bother me about this story and what I like about it.
I look at "Worm" which has a new take on superhero fiction on a regular basis -- there are tons of superhero stories and somehow Wildbow invents superpowers I've never heard of or never would have imagined using the way it is in that story. It takes on the tropes of superheroes and puts them on their head -- while faithfully following other tropes. It's layered and nuanced to a rare degree. That's five star writing.
I think "Starwalker" comes close to 4 stars for its writing -- but I can't rate it that because I didn't enjoy it. It's like eating a burger every day for a week, by Friday you want something new. Could be the best burger of the week, but it had the misfortune of showing up on Friday instead of being the first burger I ever tasted. At least I can take that step of being self-aware and saying "This is probably good to other people, but here's why I didn't like it." There will be people that agree and people who don't, because that part is subjective.
On the objective side of technique, it's excellent. I've never had to give a purely subjective criticism and do a star rating -- usually I stay fairly objective about structure. So I didn't do the stars.