It would have been highly illogical if it was a story of a cricketer, film star or a politician.
How many mountaineers do we know today ? How many of us know the names of the twin sisters who climbed the Everest last year ?
There was a similar reality show ( the one this show is portraying) on Nat geo couple of years ago. How many of us know about it or have watched it ?
As for media, they sell what ever can be sold. If people show interest in mountaineering they will dig up the old graves and learn everything about it. Since Arjun is a good looking guy and has groomed himself like a rich scion of an influential family its easy to buy his story..
This year media had few good stories to play during the General elections. One of it revolve around the educational qualification of a politician from a political dynasty. Despite of all the speculations the politician still claims to be M.Phil and denies all allegations against him.
So, for a popular face cooking a story is not a big deal even in today's world . Besides, reality shows anyways run on controversies. If they have none they will create one to remain in the media.Media at best creates confusion for all in such cases.
In this case Roonta ( or whatever his name is) has already found out Arjun's little secret .He will either guard it and make this fake story look better every way possible or create a ruckus to gain publicity. In TV world there is no negative publicity.