Rude house hunters.

I'm watching the end of a house hunting programme (I know, I know, I need to get out more!) and am quite taken aback by the attitude of some prospective buyers. Whilst being shown round other people's homes and being recorded for national tv they have laughed, been sarcastic and looked down their noses at the decor and furnishings. They were doubled up at one point. Don't they realise that this is someone's home they are belittling - plus the current owners may well see this!!