Lucky for me, I’m in NYS and going by the OP’s username, I’d venture to say they are too. Definitely do not need a sign on my property informing people that they are being recorded.
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But Apple isn't going to build devices that violate laws in some states (I think it's about 15) and then sell them in all 50.
Also, being a party to the conversation is one thing. Listening in while others talk when you're not in the room is something different, as the quote you attached says. In NY it's illegal to record a conversation that you're not part of, unless at least one of those talking has given their consent.