Before thinking that functionality is something that your customers would actually want, ask yourself "is it a good idea to put copy on packaging and advertising that tells customers about this wonderful feature?"
If the answer is "no", then the feature is a hostile act against your customers.
(Of course, Vizio knows full well this is a hostile act. They're just lying to their shareholders about it.)
The Doobie Brothers claim seems completely without merit to me. There's no possible confusion there. However, the Online Computer Library Center holds the trademark for "Dewey Decimal System" -- if there's even a slight chance for confusion it would be with that.*
* I'm only seriously joking here, as the OCLC's trademark is in a different market category.
I don't really agree with the characterization of it as a "free ride". Yes, it's using a few fractions of a cent in power it wouldn't otherwise use, but that's a rounding error. Outside of that, what costs are the customer being asked to bear?
The preamble of the Constitution does not contain any prescriptive doctrine, so that establishes no rights.
That said, the authoritarian's desire for a crime-free environment means that the actions of the police are really accomplishing the exact opposite of establishing justice, insuring domestic tranquility and promoting the general welfare.