To a point I will agree that at times talent can go undiscovered. Over the years many greats played with bands where their style was not one where some member or members could really shine. But seldom if ever is the case where someone truly talented did not eventually emerge and their true talents refined and honed and then had a chance to shine.
As for the media possibly making a band famous, well if you were alive in the 60s and 70s and of an age where you were old enough to remember Rolling Stone magazine ripped almost every album that Led Zeppelin did and the shredded the song "Layla" but what happened to Led Zeppelin and Eric Clapton and his song "Layla?"
You had the biggest name in music writing, the most famous and highly regarded music critics of the time shredding those musicians and they still became among the most famous and best selling artists and they packed every venue they played and they are today considered to be among the very greatest most talented rock musicians of all time so what does that tell you about the medias influence on fans/listeners/followers.
Music is not like politics where the media can take a fence turtle like President Obama and sell him to the public. Musicians either make it or do not make it based on their talent and their talent alone.
Why do you think that "Queen" was able to create such incredibly amazing music? How do you think they were able to write and perform songs like "Bohemian Rhapsody?" They were not only highly talented but they were college educated and had degrees in music. They studied the greats of the past, they knew all styles and types of music from classical to opera to rock and roll and they combined them and that was what made them famous, not because the media told people they were great.
They were not some garage band who covered other artists songs and then later tried writing a few of their own and worked and worked to attempt to get somewhere but never did. They were highly educated extremely talented true musical artists and it showed in their work and nothing the media did or could have done would either have made them a success or stopped them from being a success. Their music spoke for itself and it did not need the media to sell it to the public and to make them famous and successful.
Ill tell you a little story that I find to be funny. My ex-neighbor was a bass player and drummer and he had been in several bands in Boston and then after moving here he again hooked up with a band. They were really pretty good even though they played the more modern style of rock music like has come out in the last decade or less.
One day while hanging around over there the other members of the band stopped by and they had come up with something they thought was of major importance for them to have a chance to make it big. They decided that they needed to pump a lot of iron and get covered in tattoos so they would "look cool" on stage. That was their big plan to make it big. They had talent but they thought they had to have this certain image to make it.
Take a look at the old Leslie West, "The Great Fatsby" and tell me a musician needs a bulked up body and to be covered in tattos to make it. These guys, like so many newer bands, believe that looks and image will get them places when all they need to make it is talent and determination.
Consider the "Traveling Wilburys." George Harrison, Jeff Lynne, Roy Orbison, Tom Petty and Bob Dylan, maybe the ugliest collection of musicians ever assembled and anything but cool bulked up tattoo covered musicians and they made some damn good music.
Today many musicians want to try to make it using appearance and image and gimmicks and electronics that alter what they can do into what they cannot do on their own so they sound good and look marketable.
Does anyone here think that was the plan "The Yardbirds" came up with? Is that how the careers of Jeff Beck and Eric Clapton and Jimmy Page, who were all at one time or another members of "The Yardbirds" began, by trying to look cool and create a marketable image or was it based on their musical artistic talents?
Does anyone here think that one day Ronnie Lane, Ian McLagan, Kenny Jones, Ron Wood and Rod Stewart, better know as "The Faces" said we need to bulk up and cover ourselves in tattoos so we "look cool" on stage? I have to think not.
True musical artists only need their God given gifts, some time to write and some time to practice and then a few places to play and they will make it and they will make it big.