Are Super Junior & the Brown Eyed Girls too old to be called ‘idols’?

On November 5th, Y-STAR‘s ’Curious Things‘ conducted a street survey in which they asked ordinary people about the criteria of being an idol.
According to the survey results, the average age of  idols came out to be 25 – indicating that people did not really see stars over the age of 25, as idols. Taking this into account, Y-STAR calculated the average age of various groups.
Groups such as SNSD, T-ara, and 2PM were found to have an average age of less than 25, while groups like Super Junior and Brown Eyed Girls had a higher average age.
With these results, it was concluded that Brown Eyed Girls and Super Junior should be not recognized as just ‘idols’, but rather as ‘adult idols’.
Do you agree with the results and the analysis?  Share your thoughts below.