Pop music, along with popular entertaintment, evloves constantly.
All that happens now is that we see the auditions that most bands go through - albeit on an individual scale - to find members - that's the way it has always been.
By definition, it would be amazing if the winner's record was NOT a Number One - the nation feels they know the individual or group personally - they have been in their living rooms for the last three months. The trick is, can they make any more hits when that advantage is removed. Exceptions such as Girls Aloud and Sugarbabes do happen along, but that is due to good management and marketing, as well as cleve song sellection - as much as anything else.
These shows have a place in modern entertainment - if you don't enjoy the artists and songs, don;t listen to them, but to say that the shows are 'crap' is patently unfounded. They are slickly produced and edited, and judged by individuals who have made eight-figure fortunes by knowing what they are talking about. You may not enjoy what the shows produce, but it's really only entertainment on a Saturday night.
Why not go out and discover a new band? Much more fun!