Get hold of yourself. If our or our competitors' smart meters could do what you describe, we or they would make millions more than we do.
Your car has more computing horsepower than a smart meter does. It doesn't have the memory or the analysis capability to figure out when you're having sex (good grief, what paranoia). And since the meter ID does not correlate directly to a name when the meter is read, nobody knows anyway. And the data is 128-bit-AES encrypted with a protocol that takes an engineer to figure out, so nobody else knows, either.
I work in this industry, and design them, so I know what I'm talking about, for heaven's sake. Your fears are unfounded.
Thanks for your knowledegable and kind response, BackWoods. I will take your advice seriously.
((((HUGS))))