If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
There's this and this. Maybe they allow you to go all the way back to the beginning.
It's probably doable to use those to scrape comments and put them into some kind of list or database, but spending time looting LW comments that way seems like wasted effort compared to getting a full dump from an official source.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.