User blog comment:VuLinhAssassin/Testing - Ootsubo Yuka (Demo Seiyuu page)/@comment-26154973-20180102152436/@comment-26154973-20180102174205

I think it wasn't intentional (delete on the blog post), fixed. Delete on the template was intentional, though. But it doesn't mean it will be deleted. Here you can see that some templates that are in use are also marked, that is just to show that they are deprecated (content should be migrated so they can be removed) or should be reimplemented (not deleted). So in case of Template:Seiyuu, it should be reimplemented.