I agree with the first point about their actions being condemnable, although I’d also consider that Moldaver’s goal was the fusion core to power the entirety of Los Angeles, and by taking it she was condemning that vault to a slow death anyway. For the bloodthirstiness of that first episode, the NCR militia that raided that vault knew what Moldaver knew: that Vault 33 were all Vault Tec Execs who were all complicit in the apocalypse, that Vault 31 was a eugenics project to breed the future leadership of the surface world, that the current leader of Vault 31 was responsible for nuking Shady Sands, and that he gave that order pursuant to Vault Tec’s strategic plan to ‘prepare’ the surface communities for Vault Tec’s eugenics-begotten leaders. I can agree their vengefulness was condemnable but it wasn’t surprising at all after the facts are revealed.

As to your second point, I found when characters espoused anti-communist ideology they either looked immediately ridiculous as examples of red scare, or were proven wrong later by what transpires in the plot. I might be giving liberal Western audiences too much credit, though.

Most importantly to me, is that the TV series sets as canon that the apocalypse was triggered by the military-industrial complex in the guise of Vault-Tec. Given the contemporary context that we’re in, it’s one thing that the writing room chose to exhonerate the Fallout universe’s version of China (as far as I remember the games were never explicit about the cause but heavily implicit that a Chinese submarine launched the first nuclear attack), but they also laid the blame squarely on the shoulders of a Capitalist, Private-interest, War-profiteering US corporation. To top it all off they made the protagonist one of them, and her character journey one of discovering that the ideological truths she’d grown up with are all lies and that ‘her people’ are the bad guys. They only stopped short of having her be willing to kill her dad.