Point is, it is fiction and art. Created by someone/people who isn't a god. Before we go criticizing a show for being what it is, it would be better to actually be involved in creating a show like that. Does any critic know all of the constraints the writers, producers, directors, actors, camera-folk, extras etc. all faced when they created it?
I've been involved in writing and I used to work on the properties crew in musical theatre. So yeah, I am quite aware that things happen that the audience doesn't know about that affect how a scene is put together, or if lines and/or blocking have to be changed because a prop or costume simply won't work as written or as the director demands.
I had to actually explain to the director why we really couldn't have a live monkey in "Gypsy" or use real burning arrows and fireworks in "Peter Pan"... both would have been in contravention of several laws, and the arrows and fireworks could have burned the damn theatre down.
So the lines pertaining to the monkey had to be changed (we eventually used a rabbit, after I also put my foot down on using a goldfish, since it wouldn't have survived). We had to make do with a fake bomb and change the lines to do with the arrows. They weren't major changes, and would only have been noticeable to people who had memorized the script. But they were necessary to stay inside the laws pertaining to animal welfare and fire regulations.
It's so easy to sit in an armchair and fire away at every little tick that appeared out of nowhere and created a plothole or whatever, so much harder to actually go ahead and create a show of your own. I cringed (and then guffawed) at the salamanders, but of course I accept it for what it is: an episode created by someone who thought it would be good for it to be in Voyager.
It's a rare time that the first draft is ever anywhere near good enough for publication or as a shooting script. But presumably the salamander story that got to the screen wasn't a first draft, or even the second, third, or fourth. Somebody thought it would be a good idea, yeah. But somebody else should have overruled them. It makes no sense scientifically (and the science in science fiction should be at least plausible), and the way it was executed was stomach-turning. As in I nearly threw up my supper when I watched it. That's not good, and I do not give any portion of a rodent's anatomy what was going on behind the scenes.
Oh, please. If I go to a restaurant and order a meal, I can decide whether I like it, or whether it's good, without knowing every detail of the food's preparation, the availability of ingredients, or the level of staffing.
And on the rare occasion that I've complained about my meal at a restaurant, never once has the chef told me I had no right to gripe unless I could do it better.
I had an experience on this forum several years ago, when one of the pro authors demanded to know what qualifications I had to criticize his novels... was I a professional Star Trek author?
My response was that as a reader and person who bought the novels with the expectation of being entertained by a good story, that gave me all the qualifications I need to criticize a novel if it doesn't meet my expectation. He didn't take that well, and the end result of the argument is that he permanently lost a reader (and customer).
So whether it's here or on TV or in a movie, if insult is given to the audience, whoever is responsible for the insult shouldn't be surprised if the audience is critical and votes with their wallets.