Yes, but those are design flaws, not implementation flaws. We're in a phase of people networking things that have no business being networked - just because they can and some manager saw an article in a shiny magazine. At some point those personal devices getting compromised is going to kill enough people - or the right people - and we'll see governments forced to step in and stop this foolishness.
Again, I'm not discounting your paranoia, as I'm of the "if it can be abused, it will be" school of cynicism. I'm just arguing which things to focus that paranoia on.