Because fans may have used these idols’ formal usernames for their Instagram accounts made the idols themselves think correctly about their I.D.s too much for it to be unique. Some celebrities often tend to use their first and last names to make it easy for them to keep their handles on social media consistent, but as time goes by, and many idols have their own separate accounts, there are idols that choose something a little more out-of-the-blue. Source: KPopStarz
