Follows/Reminders/Finished counts not always accurate

[Tetrakern]

The objects holding the list data are not updated when a post is privated or trashed, causing the list counts to deviate. This is a minor issue which does not affect any other functionality. However, fixing this would require several database hits since you need to check whether the stored post IDs are still accessible and then update the storage. Doing this every time a list is called is just inefficient, so a better solution needs to be found.

[Tetrakern]

I do not plan to fix this, I just want to keep track of it in case this ever comes up.