Default community comments to show all replies "Show All Replies"
By default, it is hiding some replies in the comment section
This is the default configuration for the widget "Community Comments"
If you are using the OOB widget > look at the Client controller of the widget > Check on line 35
==> c.showAllReplies = false; //If True, shows all the nested replies expanded on page load.
Review the above widget and the line above which sets c.showAllReplies = false
As per widget, you can set this to true to show all the nested replies expanded on page load