I have watched a lot of the Amanda Lamb's Selling Houses and there are quite a few times when you see the house at the beginning and think, ooh lovely. Then some ghastly garish wallpaper appears to ruin it.
But the main point she is making, I think, is valid. Twenty years ago, it was all about making houses a blank canvas. Now, people are flicking through Rightmove and looking for something to stand out and one-after-another magnolia room with no personality isn't going to attract people on line.
I think putting a bed in a room helps make visualise it as a bedroom, and so forth.
For some people, having that incentive of the TV cameras in helps them get done what they really knew needed doing. They also get £1000 and that ften helps them do the thing they would be otherise struggling to afford. For people with homes stuck on the market, there is some good advice and quite a lot manage to sell on the back of it. Others, maybe, aren't selling because of other factors such as price.
At the end of the day, it's a TV show. It's entertainment. It works well as that. I also think you can get a few good ideas from it. Just perhaps not the garish wallpaper.