So ultimately, whether or not the atmosphere of a captured ship gets vented into space, dooming the crew to a horrific death via asphyxiation as their blood literally boils in their veins while their ship is dragged by salvage corvettes into a yawning hangar bay, is entirely open to whatever is most situationally (or narratively) convenient.
Gotta love the demands of the plot. Overriding reality to bring us the (theoretically) most enjoyable story possible!
Though, plot aside, giving it some thought, I do feel like that kind of thing would be a little less effective against the ME races. While we do see most people forgoing hardsuits - likely because that'd be uncomfortable as
hell working a console and sitting in a full suit of armor - the security and anti-boarding teams are almost always going to be suited up. Absolutely no idea what the Homeworlders are packing in terms of personal armament, but ME hardsuits have both kinetic barriers
on top of regular armor plating rated for multiple mini-railgun shots. Not looked up the calcs, but I have to imagine even the weakest service sidearm is going to be stronger than pretty much any infantry weapon humanity fields today. Well, standard infantry weapons. Be a bit unfair to compare what's essentially a souped-up gun to an explosive launcher, for example.
Plus, ME hardsuits are
actual hazard suits on top of all that! EM hardening, radiation shielding, a bunch of environmental protection, and even a limited amount of resistance to hyper-lethal environments. I've got a lot of issues with the setting, but it's refreshing to see a sci-fi setting actually pay
some respect to the ludicrous number of potential dangers in space.
If you assume the Federation penchant for forcefields in place of shuttle bay doors extends to things like airlocks and the valves on emergency air tanks, it makes sense again. It's stupid, but it makes sense.
Yeah... Even worse, I can see something like that happening today. Shiny tech means it's good, right? Who needs those ugly,
expensive redundancies and backups? Besiiiiides, squishy meat is totally cheaper to replace than some circuitry! Eugh.
I can definitely see the utility in having high-tech solutions like that, but more spacefaring civilizations could really do with taking a page out of the Terrans' playbook. Build rugged and reliable if it's not going to be dirt cheap. I mean, honestly, if you're building a spacecraft and it can't survive a nuke or two... Is it
really worth the material you spent on it?