Excellent post and I agree, it’s mind boggling but as law abiding citizens we have nothing to fear unless of course someone wants to use our footprint against us or manipulate it to use against us .... MOO
One of the things that always interests me about major crime...is the way that completely innocent people get their lives turned upside down when a crime goes down nearby. In this case, it's the elderly neighbor lady, just to name one person - and perhaps, eventually, the Fire Chief, and all the members of the fire department, as they were banned from searching for Suzanne and therefore, have to feel a little bit untrusted, under scrutiny.
It's not pleasant to be wrongly under scrutiny. The only thing I can think of that's negative about my digital footprint (and mine has to be extensively, I use google maps, I don't go anywhere without my phone, I have an apple watch, etc) is that I could end up inadvertently drawn into an investigation just because I was known to be in the area where a crime occurred. As a 60-something woman, it's not too worrying, but I do worry that hikers like my husband could be placed near the scene of a crime (one place he goes has had a couple of assaults and one alleged attempted kidnapping - he hasn't gone back, but it's a beautiful nearby area and of course he wants to). I've seen students questioned because their phones put them in a parking building where something bad occurred, it was so stressful.
When murders occur in one's neighborhood and everyone gets a visit from several forms of LE, it's stressful too - but the digital thing widens our exposure.
I am still in favor of the digital world we live in, because our current, relatively steady decrease in murders is due to DNA, to video surveillance - and digital tracking. IMO.