Once again, people are shockingly lax about any kind of safety protocols or precautions of any sorts, from people who should know better… At this point it’s so deeply ingrained in the series that doing otherwise would feel wrong I think.
I think we have to see the this as an alt-history given the Maginot necessarily launched in 2055, and yeah we're definitely not going to have the capability to manufacture a space-faring vessel with that
outward appearance by 2055 (and it'd have to have been started building, completed and trialled years before that, even), let alone have access to artificial gravity, cryosleep, FTL, presumably a fusion-based power planet, and so on (and seemingly inertial dampers - a lot of stuff is hard to explain if there weren't inertial dampers here, but they're sort of "baked in" to a lot of sci-fi ship behaviour)!
And there are some curious quirks of technology which look deeply retro from our perspective. So despite Ice Age (of all things!) and that 1977 ball game happening in both timelines, I think the timelines probably start diverging in like the 1950s or earlier.
With the five corporations running the planet for what, probably decades by 2055 even, I have to imagine all OSHA/"'Elf and safety innit"-type organisations have been deleted from existence, litigation against the companies is probably legally impossible (except by each other - we know from episode 2 that that's possible), so they don't have to worry about safety except where it hurts the bottom line or imperils their workers/vessels in ways they actually care about. It does seem, from Alien, that they probably at least act like they care a bit, and have safety manuals, because Ripley's whole deal early in Alien is "What the hell are you idiots doing, this puts us all in danger and (IIRC) isn't protocol!".
I’m wondering why the xenomorph is so violent, whether the xenomorph is in « secure perimeter for the queen » mode, or totally panicked and confused, or whether it is a juvenile queen clearing a nest for herself?
Yeah there seem to be four theories here:
1) Oh no poor baby is scared!!! Awww little xenomorph kill the mean men scaring you!
I don't think this is it personally but I do enjoy that people are increasingly siding with/anthropomorphizing the xenomorph we're so used to it at this point!
2) Yeah maybe it's a queen. I would be surprised given Scott is EP but... Hawley said this show is "officially non-canon", and there's only one thing that determines whether something is "canon" in this franchise - Scott's opinion - so Hawley may have pre-permission to use the "non-canon" queen angle. He's certainly using a ton of aesthetics and some ideas from Aliens.
3) That there may be two xenomorphs and the very agile, fast, sleek and incredibly aggressive one may be from the cat (or there's one and the apparent chestburst from a cryopod is a misdirect).
4) That this xenomorph is operating on an "eggmorphing" principle (this is slightly supported by some random pre-release thing for Alien: Earth referring to "ovomorphogenesis"), a technically non-canon process (because the scene got cut from Alien by Scott himself) that nevertheless often pops up in Alien-based media whereby a non-queen xenomorph can somehow cause an incapacitated victim to turn into an facehugger egg (a royal facehugger egg in some versions of this), and is protecting eggs it made. This doesn't completely track with the slaughterfest (you'd expect the xenomorph to drag more people away if it was doing this) and also seems wrong because the eggs appear to have been in crates before someone got them out, though could link to the "two xenomorphs" theory.
I suspect none of the above are fully correct (the first one least of all) but we shall see.