Hi davidevg09,
Sorting in blogs is not allowed by design[0]. The configuration.sortOrder is an artifact of super entity. Sorting is allowed in forum(just to give you an example, why is it needed in super entity).
FYI - Any component, where sorting is supported, the settings can be modified in authoring [1].
Hope that helps,
Rahul
[0] - Blog Feature
[1] - Forum Feature (Refer configuring a forum)