I have no doubt there was and is a lot of distress and misery, but playing the emotional card is rather moving the goal-posts, isn't it? The point at issue is not what people are suffering in this particular instance, but what in general is the best course of action for people facing the imminent prospect of flooding, and the only thing so far that you've said that justifies people rushing off into the night in highly dangerous road conditions is that they live in a bungalow, but even then you have admitted that they do have some sort of area upstairs to which they could have retreated.
I repeat, when faced with a threat like this, it's nearly always best to stay put where you have some shelter and somewhere to keep dry, drinking water, warm clothing, etc, and if you live in a flood-prone area, ensure that these things will always be available by planning in advance. You don't have to be 'bloody clever' to know this, it's bog-standard advice, like staying by your vehicle if you break down in a wilderness area.