Create user from userAccessor only as confluence-administrator

recently we have discovered that the defaultUserAccessor.createUser method changed its implementation since confluence 8.1
Previously there was no check if the user has permissions to create a user, but now it seems like there is a permission check for this method.

It seems like only confluence-administrators are allowed to use this method now. Is there a way to create users without being assigned as confluence-administrator in confluence versions > 8.1?