Missed opportunity to have them open their mouths like the imposter has a chance of doing whenever it kills a crewmate, but still a very hilarious recreation of this moment.
Perhaps the crewmates are dead and they 3 are impostors, exhausting all the food resources due to the skeld not being maintained properly after the crewmates have died for decades, and since it hasnt been maintained for decades, sign of lifeform has been found, explained for the sus crab.