They are literally in a life or death scenario trying to survive one small mistake and somebody can die I think lying in this sort of situation is a pretty important thing and nothing to scuff at
It's worthwhile keeping in mind that they lied for a specific reason that imo wasn't relayed excellently (I have altered this in the script if ILS chooses to keep it) because the reason they were lying to MC, is to keep him safe. Over the last month he's been pushing himself more and more both physically and mentally. ILS has covered this nicely by bringing up him not eating as much food, not sleeping as much as he should and spending way too much time out in the fog than everyone else. Their worry, was that in the agreed upon plan, he would escort the women to see Eve and try and convince her that they're cool etc and in the process, would be left outside in the fog waiting for the conversation to end.
At the same time Kallie's side mission at the behest of Laura, was also helpful, because it's a quick jaunt outside to get into one of the other houses, to get MC desperately needed clothing (I've added dialog here as well, again if ILS likes it) because he had basically 1 change of clothing. If both sets of clothing are ruined by the fog and he's needed outside, he's fucked.
So my point is, whilst it's understandable that people are saying I can't believe they lied to him (because their reasoning wasn't made clear enough) they were ultimately trying to keep him alive and well and at the same time potentially get access to a vehicle via Eve.
