The show lost all credibility the moment they saved Jedward over Lucie.
Sure, we had 'controversial' moments before such as Chico, Simon sending home his own act (The Conway Sisters), Maria's and Laura's eliminations, but the whole facade came crashing down the moment they saved John & Edward in that sing off.
Cowell had gone on and on about hating them all series and then voted to save them. I believe a lot of viewers saw the show for what it was in that moment. Simon lost so much respect and the show just became incredibly transparent. How could anyone believe a word out of Simon's mouth from that point on?
Whilst I had seen bits and pieces of 'manipulation' in the first five series, for the most part I felt it was pretty genuine. Sure, Leona's win was really pushed upon us, but at least the show was backing someone who clearly had talent and was clearly the best (of who was shown on TV). Go and watch back series five and it's pretty clear they throw Laura under the bus hardcore, and subtly pushed for a Diana win (until she got ill).
Manipulating the votes for Same Difference in the semi final with the sob story etc.
But for me, it never really crossed a line until the Jedward moment. The show lost me then and has never really won me back. I've only watched it very casually since then - haven't seen a full series since.
Simon chose headlines over the reputation of the entire show. The show might have dominated headlines and had everyone talking at the time, and it might have brought in even more viewers for series seven, but ever since the show's been in decline, so was it really worth it? It might have naturally died a death anyway, but it might still have been flying high, pulling in similar ratings to Strictly? Who knows?
The show was way more light hearted and fun back in series one - five, so had they kept the vibe like that (i.e. Strictly), then maybe the show would be performing much better.
Instead, each year, they just try to be more outrageous with the results, and overall have a bit of cruel, humiliating edge to them.