https://apnews.com/article/wi-fi-hacking-technology-business-b7cb6c95190f4876243d5b2a30a38200

QuoteDo you own an Amazon smart device? If so, odds are good that the company is already sharing your internet connection with your neighbors unless you've specifically told it not to.

Some of those who opted out when it was first announced later found out that it had been re-enabled.  I waited a few weeks and I was still opted out on Jun 8th.

How to Opt-Out of Amazon Sidewalk
https://www.howtogeek.com/702485/how-to-opt-out-of-amazon-sidewalk/