Something I've always been curious about is the appeal of a TAS over a regular speedrun? Is it just because it makes it less tedious? I've always seen regular speedruns as being better for a record breaking perspective, since it's just a human interfacing with the game and not intermediary code (I'm not throwing shade or anything, I just don't really get it and I'd like to understand it more).
The people putting in the work to make TAS runs are also very frequently the same people closely involved in understanding how a
lot of the exploits and other things function in the games being speedrun. This means that they are involved with a lot of work done on discovering glitches and determining whether something is human-executable or not. Additionally, they also do a lot of investigating around things that runners stumble upon accidentally. Oftentimes, once something's discovered, that means that you'll get a bunch of TAS runs to test out parameters on what's happening. That work gets used, so that the community can reach a level of understanding around
why particular parts of the game work the way that they do, & see if things are reasonably exploitable for run attempts or not based on what factors lead to success. All of that helps runs, but particularly Any% records to have sudden shifts in how quickly you can beat a game that make big impacts in their respective communities.
Bismuth has a really excellent explanatory video about TAS stuff in general:
The other thing that's neat about TAS is that they can do things that are either literally impossible for people to execute, or that use a degree of constant extreme precision that you could never have from a human player. That type of entertainment is usually appreciated most by the specific game's speedrunning audience because of the understanding of how difficult all of those things are for human players, and they wouldn't always be as impressive for a general audience without a good degree of context. A REALLY great example of that is TASBot playing Super Mario Maker 2 during AGDQ 2020:
X