PSN users can finally upgrade their sub accounts to master accounts.
Sub accounts are essentially for people under the age of 18. Their parents and guardians have control over the online experience. Various online features such as broadcasting and messaging can be restricted for a sub account. More differences are found here.
Details on how to upgrade a sub account to a master account are available on the Sony support page here.
I can’t believe it took this long but hopefully this paves way for other essential online features like 2 step authentication and PSN ID changing.