You could also say that information & records held in data silos is a 'time capsule' just waiting for the reapplication of electricity to reveal it's secrets - solar or wind power isn't a big deal to get going and data silos generally have controlled shutdown processes so there would be little if any data loss - what there would be, is the 'dark' period where nothing is recorded due to the primary medium of almost automatic transcriptions of life being interrupted - which brings us back nicely to the OP's opening statement!That's a point i was about to make - it is all dependent upon electricity. Something unknown of for the vast majority of human history; something still unknown to millions of people; something generally reliant on a large, complicated and expensive infrastructure. I get that's it seems ridiculous to question the future availability of electricity but we don't know what the future holds. All of our eggs are in that IT/electricity basket.
Edit - and the sh** hits the fan if it goes. The 'we're potentially on the cusp of a dark age' scenario goes - no power/IT = no light/heating/food distribution/news; a much reduced defence, etc. Some people would cope but the majority would struggle and it would take some time for a new system to kick in.