I was also a little thrown off by what he mentioned, about her being poor but also having a good position, it didn't feel like a glaring issue to me though. I haven't felt much discontinuity either, I even just looked at the scene gallery and haven't seen much of what they mean by non-main characters being easy to fuck. It seems to me that they're confused and noticing all the times that it's possible to have sex, rather than all the times that it isn't. I'd even factor in some of the tension they have from constantly being in danger adds to the romance in a suspended bridge effect.
One problem I have though is I feel like they should be running out of cash more, with how much they're on the move and how many mouths they have to feed, it should feel like they're a little more strapped for cash. I understand the kitchen has a food creator, but I still feel like fuel would be super expensive with so many people living on a smaller ship and using its facilities so often.