yup,Alexa app, which I haven't opened since at least last year, and had all devices unplugged, found it buried in there - set to [ENABLED]. I've never seen a notice/alert/opt-out opportunity, and I would have noticed it.
So, yes, in at least some instances, Amazon is doing a stealth-enabled rollout.
So, yes, in at least some instances, Amazon is doing a stealth-enabled rollout.