just, like, cousins or something :)
These posts are settling down a family it seems. 🥸
Some identities, in some contexts, can certainly be abandoned. But in some, an identity is a thing that accrues capital.
That's why being anonymous is important, there's potentially no limits of how many identities you can own and manage, say you're in a political community and also in another totally unrelated, some people could go against you because of what you said that doesn't even matter in the context you're in at that moment, keeping them separated from each other can help greatly for that.
If we separate our identities from the "real" us, what are the consequences?
It depends on what you do, is "you" really required for what you're going to do? If the answer is "no" or "maybe" you should keep it hidden altogether.
And, as I written in the post, the "real" you might just be a "persona" of yourself, I think we should ask something more like: "Is my face really needed to have a believable and valuable identity?"