It's amazing to me that the top comment on a post that has very little to do with indexing -- basically waves at the topic in passing -- is about indexing, AND

It's amazing to me that the top comment on a post that has very little to do with indexing -- basically waves at the topic in passing -- is about indexing, AND that when it's pointed out that this is not a very scintillating topic of conversation in this day and age, all of the responses to that comment are just more pedantry about indexing. How does this trivial topic hold such fascination for people?