The phrasing was “you get fault points for” which strongly suggests assigning fault rather than listing out “points at fault”.
Also I think the term would be “points of failure” for the way you read it. At least that’s howbive heard it used and used it myself.
I agree with you on the ending. It felt like they intentionally left a lot unresolved to encourage calls for a second season, at the expense of the story. It would have been much better if there was some resolution to a few aspects and/or a hint at the fallout of the actions in the season.
Good subtle world building, too.