The pragmatist trait is based on the idea of lowering mood debuffs from a variety of sources.
“It’s the apocalypse, I don’t like what I need to do, but I need to do it.”
This would do things like reduce (not remove) the debuff for things like killing, cannibalism, and trait related mood debuffs.
For example, with the Nomad trait the mood debuff would accumulate slower, hating books will give less of a debuff for reading, hating certain foods will give less of a debuff, etc.
This also allow the player to be more willing to do certain tasks at low mood, albeit slower than before.
If paired with traits that completely remove or give mood bonuses for certain tasks, such as cannibal, or psychopath, those take a priority.
Due the wide variety of benefits and the fact it can reduce mood penalties from various other traits I imagine this would be relatively expensive to use.