Future historians don't care about who was in line in the bakery this morning etc. Data that should legitimately be obscure is about personal/small scale everyday actions that could be identifying given a small sample. I'm the first one to fall into data hoarding, but we need to repeatedly acknowledge that most of the things we do are not worth being recorded, and actively not recording them (or making them easily accessible, standardized) does have a lot of value, in terms of social structure.
>Future historians don't care about who was in line in the bakery this morning etc.
They do when it turns out that a serial killer was in that line. Tracking exactly what that killer did leading up to the killing spree would be very interesting to them.
But it's very hard to track 1 person retroactively. Unless, of course, there's a nation-wide surveillance system in place.
I'm not advocating for it. I'm just saying that the parent is correct in that historians would love this information.