Ive never been a big fan of the X-Factor or BGT. I stopped watching them in any meaningful way several years ago.
I dont think Simon is jealous of Strictly cos the X-Factor is really trousing them in the rating this year... for all the complaints about Strictly this year (and they are LEGION) I think the tide is showing signs of turning against Cowell a little. Dont get me wrong, I think his dominance will continue for many years to come but the first inklings of disquiet are starting this year.
For me Cowell's shows give the wrong message to the public. The idea that fame and success can be gained instantly, rather than the hard slog and practice that is in reality required. Clearly the X-Factor contestants DO practice for years but we dont see that labour on the show and it encourages a culture of instant gratification and reward.
I also dislike the tendancy for these new stars to be massively hyped, only to be dropped like hot cakes by Cowell the minute they fail to be a massive money spinner. as a big music fan, I resent what I interpret as Cowells fixation on his artists making money rather than producing good music (and some of those that emerge from these shows ARE talented). Added to that theres the very controlled way these artists are markets and the very bald, mainstream music that they eventually produce. Originality and creativity is not required in a Cowell protegy...

I find Cowell and his ilk very cynical.
For me Strictly is different in tone altogether and that is one of the reasons I prefer it. The contestants already have some talent or achievement in their past (Jo Wood excepted!)

THey are taught a NEW skill, we see their training every day on ITT, we see them develop and struggle in a way that is barely touched on in X-Factor. At the end of the show THEY GET A GLITTER BALL! Thats it, no bullshit about a big career as a dancer, or international celebrity off the back of it...
OK, yes, the contestants DO benefit their careers from Strictly, but at least they excelled at something (in most cases

) BEFORE Strictly, and most return to their original careers with a higher profile and a new skill to boot.
Theres less bull in Strictly and thats why I prefer it!