Well that's throwing the baby out with the bathwater. I've use a bike for most utility trips for most of my life and not had one stolen yet - current security is a D lock and an alarmed cable lock, but I do hesitate to leave a bike alone in London, so usually either take my folding bike in with me, or leave my bike parked at the train station and use London Cycle Hire.
My household have had two bikes stolen over 20ish years: one was taken from a supposedly-secure compound at a workplace - work paid for the replacement and upgraded their security; and one was a borrowed bike with a borrowed lock that turned out to be shoot
(rated 3 out of 10 by the shop that sold the lock - I mean, why even bother selling that? It was far too big to be useful as a cafe lock) stolen from a shared bike shed at a block of flats.
I don't use any of the cloud-based trackers, but are they still set to be completely insecure/public until you tell them otherwise by defining such privacy zones?
And making rides private seems like relying on the cloud owner's security not being breached (or simply flawed) which I don't think is a good move.
I think so too, but there's always the facebookers willing to tell us that we're imagining it and sites like
www.pleaseRobMe.com are scaremongering.