Usain Bolt have a world record, anybody can have a Guinness World Record if you have money, and challenge things like most helium balloons tied to a paddleboard while paying Guinness staff to fly around and some big fee to put it in their books.
This one from Lars is actually one of the 'better' ones.
There are any of a thousand of video game speed runs you could probably beat with a week of solid effort, but breaking the Mario 1 speed run is a different league.
And of course on the tracking sites one of the best ways to get noticed is beat a famous record by a bit, or beat an unfamous one by a lot (because a large beat likely means it can be improved more, and so people will try).
This is also why record runs In track mania for example often “calm down” until a new path is shown to work (even in a tool assist) and then there’s a flurry of interest.