> Work profiles are inferior to separate user profiles, which are built-in to GrapheneOS.

Different use cases. User profiles are only active when you manually switch to them, while work profiles are active _alongside_ your main profile.

So for untrusted apps that you only use occasionally and on-demand (like the myriads of travel / shopping / random services apps), user profiles are great. For apps that you want to keep in the background, such as the proprietary messaging apps that all your friends use, a work profile is much nicer.

Private Space is very similar to a user profile but nested inside of another user. GrapheneOS adds shared clipboard control for Private Space which was the main disadvantage compared to a secondary user.

GrapheneOS supports having a Private Space in secondary users instead of only a single one in Owner. Supporting multiple Private Spaces per user is a planned feature at which point work profiles will be fully obsolete. The remaining use case for work profiles is to have both a Private Space and work profile in the Owner user.