BuddyPress.org

This is more of a WordPress thing, but yes, it’s possible.

Though, I would do it with only one page.
eg. example.com/dashboard

No need to create pages for every single user in your userbase!

I would create a custom page template wrapped around an “is_user_logged_in()” conditional so only logged in users can view it.

Then the admin can add whatever content s/he chooses for the “dashboard” page in the WP Page Admin area.