Auto schedule for Calendar Events
Auto schedule only applies to tasks that are not locked, The default calendar events are locked, and the calendar events is less likely to change relative to the time, and sometimes it is Shared, so you don't want to change it too easily or unexpectedly.
The Task format is only in Sorted³, it would not support calendar.
We chose not to sync tasks to the calendar because some information of Task, such as tags, is not supported in most calendars. If synchronization is done, it means that the synchronization will be incomplete, because this synchronization will not be taken for the time being.