The only way to access it with `about:profiles`? It looks like a joke. How could users possibly find this?
UPD. The more I look at this, the worse it gets. Hidden under a special URL, requires you to launch the default profile before you can switch to another profile (yes-yes, there are command-line hacks). It's more like a user data manager for devs than profiles for users. Even containers look better than these profiles.