Humble-related posts not linked in this category?

It seems that the humble sync posts are not ending up in this category. Is this intended? If yes, what would be the purpose of this category?

I would expect to see Preparing for Humble Sync on July 15th, Preparing for Humble sync 2022-06-10 - #2 by audrow and Preparing for the First Humble Sync on May 23rd in here.