I think I agree with this one - I’m happy to take this in a case per case basis, but I think if we’re asked to remove this kind of data we should agree.
Edit: possibly relevant reading: deadnaming.
Edit 2: For cases where the deadname was actively an artist credit, rather than just a credit for a relationship or given as a member, see Handling name of transgender artist - #235 by Deleted_Editor_2400568. Generally, for us to remove data the artist should have shown they’re actually interested in getting the name taken down: contact us, and ideally have taken steps to remove it from all public sources (excluding data on the Internet Archive, or sites outside of the artists control). Otherwise, we can agree to remove an alias for a deadname but we currently have no way to ensure it won’t just be readded if found in the public record. We are hoping to eventually have a way to block re-adding the deadname (and redact it from the edit history) which we plan to use for (non-artist-credit) cases when the artist requests it and has taken the steps mentioned above but we have no ETA on that.