That's because these ARE nitpicks and shallow complaints.
Obviously everything in entertainment is subjective to a certain degree, but there are some things that are close to objectively being superficial and nitpicky.
Do you see people making a big deal about James Caan's obvious air punching in his fight scene with Carlo Rizzi in The Godfather as taking away from the "realism" of the movie? No, because that's nitpicky and superficial. Just like how "space doesn't look empty enough." Obviously STD is nowhere near the caliber of work that Godfather is, but that shouldn't make nitpicking and shallow complaints acceptable as legitimate criticism.
That's a poor comparison for a number of reasons. First, they didn't
design the air punching to look like that. It was more a technical limitation (Caan couldn't actually punch him) likely combined with an oversight (not realizing that it looked fake until it was too late). The space shots in STD were designed to look the way that they are, as are the other things that are being "nitpicked." Also, The Godfather is considered one of the best films ever made, with very few problems, so it's easy to overlook the odd one here or there. If it were not considered a good film and someone were going through a long list of bad things about it, the poorly done fight scenes might make the list. Conversely, if STD didn't have so many issues, something like dense space shots might be overlooked. For example, The Orville has some problems (corny-looking CGI, for one), but they're easy to overlook because that series gets so much right. If it had gotten so much wrong, instead, those things wouldn't be overlooked. That's just how it is.
You're missing the point if you're judging each criticism as a "nitpick." Johnjm22 didn't criticize the dense space shots simply because he didn't like them. He was giving it as evidence of a pervasive theme throughout the show to crowd the screen with so much stuff, especially post-processing, that it becomes distracting and gives the impression that they put more care into visuals than things like characters and storytelling. He's even explicitly made that point and you've seemingly been ignoring it to focus on one example--space shots--that he gave for it. Sure, you can make criticism of dense space shots and an abundance of lens flare, reflections, computer screens and heads up displays each look like a nitpick on their own, but, taken together, criticism of the show's visual design is a perfectly valid complaint. In fact, you can probably take any perfectly valid complaint and break it down into the smallest components in order to dismiss each component as a nitpick, if that's your agenda. In a way, the person doing the accusing of nitpicking is often doing the nitpicking, himself, by focusing in on the examples that people give (ex. space shots) and ignoring the big picture that they're complaining about (ex. visual design).
I'm kind of shocked here. Are you actually premising your argument on the tenet that Trek SHOULD be narrow, reserved and exclusive? That's the most elitist and Trek-fan-egotistical statement I've ever heard.
When people say, "that's the most [blank] thing I've ever heard," it's usually because of their own failure to understand the other side's argument. You used the phrase "narrow, reserved and exclusive" to characterize what Star Trek has been for the last 50 years so that you could justify it being different going forward, so I said that Trek should continue to be what it's been for the last 50 years. Is that really an elitist and egotistical argument? I think that it's a bit silly to characterize people's arguments in unflattering terms ("narrow, reserved and exclusive") and then act shocked that they're willing to stand by their arguments in spite of your unflattering characterizations.
I find it ironic that you are a fan of futurism and imaginative science, yet you seem (and want Star Trek) to be constrained by these soft boundaries and seem to be more comfortable with conservatism and what you already know. Futurism and imaginative science come from expanding boundaries, not recycling what you already know.
I find it ironic that you say that Trek shouldn't be about "recycling what you already know" when the show takes place only 10 years before TOS, has Klingons as the main enemy, has Vulcanism as a central thread, even has Harry Mudd in it and looks just like the new Star Trek films. Recycling what we already know is precisely what this series is doing, and it's doing it because some people are "more comfortable" with that. Meanwhile, some of us have been arguing for a post-Voyager series that
doesn't recycle so much and isn't so constrained by boundaries... and, ironically, you're criticizing us for wanting the opposite while you're defending the show that's deliberately boxed itself into an already well-established era of the timeline and is forced to recycle.