I got an email from Amazon today. I’m automatically opted-in to “Amazon Sidewalk”, unless I choose to opt out. Amazon Sidewalk allows devices participating their Sidewalk program to connect to the Internet through Amazon devices, like the Amazon Echo.
Amazon Sidewalk – a mesh network for Amazon devices to connect to the Internet:
Not exactly how I’d envisioned a neighborhood mesh, but their “read the fine print to opt out” strategy will probably work better than my asking neighbors to build a network.