But how is this related to the internet being archivable? This sort of proves the point that URLs were always a terrible idea to reference in your compliance docs, the answer was always to get the actual docs.
I would never rely on this vs just downloading the SOC2 reports, which almost always aren't public anyways and need to be requested explicitly. I suspect that that compliance page would have just linked to a bunch of PDF downloads or possibly even a "request a zip file from us after you sign an NDA" anyways.