All of the items you just listed would account for more than 200 watts of increased draw. 200 watts is about right for the lighting/tv/PC monitors/etc that would come on when someone is home.
I have my own issues with smart meters, specifically the fact that they give the electric company too much information about me, and will doubtless eventually be used by them and/or the nanny state to raise rates in a misguided attempt to modify my behavior. Dial meters and/or simple digital ones (e.g., ones with remote read functionality but without demand billing/logging features) are preferable. Residential usage is predictable and easy to plan for, there is no reason why my utility needs to track my demand in five minute intervals. There is no reason why they need to know which appliances I have hooked up or how I use them. Bill me per kWh, plus a base fee for the meter, and leave me the hell alone.