You can always imagine that in the HPMoR fictional universe, Fate/Stay Night came out in some form much earlier -- same way that variations of 'Gargoyles' and "Death Note" seem to have been wizardly entertainment earlier than their real counterparts came out in the real world....
Anyway, it's not really useful to fuss about the chronology of fictional references too much, either from the point of view of the readers, nor from the point of view of the author...
Personally, I find shout-outs less jarring than straight out references to Harry having consumed fiction that shouldn't exist yet. The Tragedy of Light isn't Death Note, it's The Tragedy of Light, even if the real life inspiration is obviously Death Note.
The next discussion thread is here.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 85. The previous thread has long passed 500 comments. Comment in the 15th thread until you read chapter 85.
There is now a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15.
As a reminder, it’s often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: