Another part of me wonders if they were being positive to the point of lying about it lest they be seen as a "negative person". Why? Because as the sewer rats have shown us, speaking the truth about badness brings out the teeth and the claws. They will take you apart for daring to pipe up about something that just does not make sense.
They can have their dishonest positivity. Someone has to deal with the actual problems in the world, and it starts by admitting they exist.