I absolutely love write-ups about the nitty-gritty of speedrunning these near-perfected games. Even as someone who sort of keeps up on it, reading it all written out is a joy.
If you enjoyed this post, I would highly recommend watching some of the videos by Summoning Salt about world record progression of various games. The videos about Super Metroid and Super Mario 64 are ones I’ve enjoyed in particular.
@nifboy makes a real good point about how you don’t need to be a world record holder to be a speed runner. Some of the runners I watch don’t have the fastest times but they provide entertaining commentary while they play. Trihex, Cirno, Gamej06 (Big Jon) to name a few. Not all of them are the fastest (although I think Trihex and Big Jon have had WRs at various times) but they are very frequently entertaining.
Another fun thing to check out is the AGDQ 2018 Strider Live tutorial showcase, where one speedrunner, ThaDarkMan78, teaches another, Jimmypoopins, who has never played the game before some tricks on how to run the game live.