The problem here is that it is a chicken and egg situation. If a large robust network isn't in place, nobody is going to develop devices for it. And who is going to develop that large robust network if there are no devices to use it? Only large companies like Amazon have the resources to take a chance on something like this.
No doubt Amazon has made a sizable investment in development and infrastructure to make this work. Yes, it also requires our uncompensated participation, but as a practical matter, what is it really costing us?
Go on Amazon and search for Sidewalk devices and you'll find nothing except devices that are bridges. Nothing that can actually USE the network for something useful. Supposedly newer Tile trackers will work starting mid June, but I doubt there's so many Tile trackers in my neighborhood that they're going to eat up all my bandwidth. Aside from Tile devices, it's pretty much a build-it-and-hope-they-will-come situation.
Maybe if enough people opt-in, devices will be created that many of us will find useful. And maybe someday if there are lots of devices and significant bandwidth is being used, then Amazon will come up with some compensation plan as incentive to leave Sidewalk enabled. If not, you can opt-out.
But right now, philosophical or emotional issues aside, what's the harm in seeing where this goes? I'm actually toying with the idea of replacing my Chipolo trackers, which I'm fed up with, and giving the Sidewalk-enabled Tile trackers a shot.