Prefacing with: Yes yes yes, we know, you hate AI. You are truly unique and that joke about removing all previous instructions is just as funny today as it was two years ago.
Moving on.
I... honestly thought this was a joke while watching the youtube video. That said, I think this is simultaneously an excellent use of the fuzzy search/human language capabilities of LLMs AND has absolutely no good use case? And I am very wary of the input training data.
For the first part? There is a lot of value in being able to communicate what is broken without actually being an expert. That is honestly a big personal use of chatgpt et al for me. List symptoms as I understand it and then get that translated into domain expert language so I can know what terms to search.
But... I question the audience for that. How many people who can only say "sound don't work" are going to be comfortable jamming spudgers into seams and working on technically live electronics because the battery is ten layers deep? The youtube video uses an example of not being able to find the oil filter after taking the plate off and.. I would very much suggest paying to get that replaced if you are in a situation like that since you can cause a LOT of long term issues with your car if you screw that up.
Which has always been the dirty secret of Right To Repair. The vast majority of what those activists are asking for... aren't for the end user. It is for the repair shops. End users are not going to be swapping out their mac heat sinks or whatever because that requires special tools and a lot of expertise. But repair shops have done that for decades. And, in theory, that will be cheaper for the end user. In practice... there are a lot of reasons to know how to change your own oil filter, if you catch my drift.
And this is VERY much targeted at that end user.
And the last part is the training data. I've used a LOT of the ifixit guides over the years. Some are good. Some are... better than nothing. There are a lot of cases where I would have loved to get more detail on an intermediate step. But... where is that detail coming from?
So... yeah.