Amazon Sidewalk is coming – and not everyone will be happyQuoteEcho owners have begun being notified by Amazon that Sidewalk shared networks are launching later in the year, along with apparent confirmation that it will be turned on by default.
https://www.slashgear.com/amazon-sidewalk-is-coming-and-not-everyone-will-be-happy-24648652/
How to Opt-Out of Amazon Sidewalk
https://www.howtogeek.com/702485/how-to-opt-out-of-amazon-sidewalk/
However, it is best to wait a while. There are credible reports in the smarthome forums that those who turned it off early have found it back on as Amz rolled out the service.