I don't know why ppl watch Indian idol, may be they are addicted to Indian programs.
When you are addicted to something you can not accept other similar sounding things and become aggressive towards it.
I have not watched Indian Idol ( I don't find any reason to do so) Nepali idol is good for me. Any way without even watching Indian idol I can say those are not originals too ( it is a common sense, because India and Indians have never been a creator of the idea, rather they are just user of the Idea).
Regarding the idol fashion, Wikipedia says
"Indian Idol is the Indian version of the Pop Idol format. It started airing in India with the first season in 2004–2005 and was followed by second (2005–2006), third (2007) and fourth (2008–2009) seasons.
And regarding the Pop idol format Wikipedia says
Pop Idol is a British television music competition created by Simon Fuller which ran on ITV from 2001 to 2003. The aim of the show was to decide the best new young pop singer (or "pop idol") in the UK based on viewer voting and participation. Two series were broadcast—one in 2001–2002 and a second in 2003. Pop Idol was subsequently put on an indefinite hiatus after series judge Simon Cowell announced the launch of The X Factor in the UK in April 2004.[1]
The show has become an international TV franchise since, spawning multiple Idol series worldwide. In the mean time a legal dispute arose with the makers of Popstars, which eventually led to the word "pop" being excluded from the titles of all the spin-offs, such as American Idol, Australian Idol, Arab Idol, Indonesian Idol, Indian Idol, New Zealand Idol, Latin American Idol, Idol (Norway), Idol (Poland), Idol (Sweden), Idols (South Africa), Pakistan Idol and Ídolos (Portugal).
Now,
When something is a international franchise, they will be very similar. McDonald chicken burger taste same everywhere in the world, because they use same recipe.
But for ppl who are addicted, they don't care, they always insists, their addiction is best.
