I believe profiles are now fixed. The amazing @manta2g tells us that any page with a green bar at the top of the page is fixed and working. If I click on my own archive profile, I can edit my bio, update my pen name or email address, and add to various fields.
However, if pen names were changed at random, the authors would need to be aware that the name has changed. In the case of older accounts where the author hasn’t been active in some time, it could be an issue.