That is the way I would go if you have a need to show them all in other places.
To be honest, I have rarely had ACF return post objects from relationship or post object fields because there is too much overhead. For example, if all I am doing is getting custom fields from the posts and I will not be showing any of the WP content for the posts then there is really not point in doing a query to get the posts at all. And since I never I don’t build sites that use the default content editing I almost never need the posts.
