Fixed #35767 -- Adjusted customizing User model docs.

docs/topics/auth/customizing.txt

@@ -400,10 +400,9 @@ the Django model that you wish to use as your user model.
 Using a custom user model when starting a project
 -------------------------------------------------
 
-If you're starting a new project, it's highly recommended to set up a custom
-user model, even if the default :class:`~django.contrib.auth.models.User` model
-is sufficient for you. This model behaves identically to the default user
-model, but you'll be able to customize it in the future if the need arises::
+If you're starting a new project, you can set up a custom user model that
+behaves identically to the default user model by subclassing
+:class:`~django.contrib.auth.models.AbstractUser`::
 
     from django.contrib.auth.models import AbstractUser
 
@@ -426,7 +425,7 @@ Changing to a custom user model mid-project
 -------------------------------------------
 
 Changing :setting:`AUTH_USER_MODEL` after you've created database tables is
-significantly more difficult since it affects foreign keys and many-to-many
+possible, but can be complex, since it affects foreign keys and many-to-many
 relationships, for example.
 
 This change can't be done automatically and requires manually fixing your