That's a fair question, but I think the answer is obvious. Until the invention of photography, literally the only formal records we had of past events were the things people bothered to write down, paint, or sculpt. And of those, we only have the arts and written records that actually survived. So to find out information about the distant past, we have little choice but to extrapolate from artifacts, dig up old buildings, etc. The artifacts and records that we do find have outsized influence on our understanding of the past, compared to all the information and details that have been lost, which can literally never be recovered.

From the 21st century onward, that relationship is inverted. Any hypothetically useful unit of information about the past will be recorded hundreds or thousands of times, and the useless units of information will outnumber the useful units by many orders of magnitude. Sure, if someone proves to be exceptionally notable, there may be some value in decrypting their past Amazon purchases or cracking the encrypted SSD they left behind. But that's going to be the exceedingly rare exception, rather than the rule, especially when the world's data stores are crammed with news articles, photos, videos, interviews, blog posts, reddit posts, journals, and non-encrypted records that appear to tell a complete story of the lives of notable people, and for that matter the day-to-day lives of regular folk.

And that SSD may be every bit as exciting as the Hunter Biden laptop hard disk... that is, barely exciting at all, and full of such routine and irrelevant information as to be an almost pointless exercise in data forensics.