roses I agree completely with you about meeting clients' brief within a budget and timescale, which is perhaps the main point. And it's a telly programme, and has to entertain.
However, I do not agree that the designers are "only amateurs". They are aspiring professionals, and hoping to earn money from their art. To my mind, a half-decent designer should be aware of stuff like the use of reflective surfaces to widen a room, the appropriate use of colour to create mood, to enhance room dimensions or to detract from or enhance features.
Those are fundamentals. Style should come later, in my view.
I think I'm getting carried away with this programme.