There's at least 2 other options: Disable (physically) modems/antennas of sidewalk-enabled devices you own, or do not purchase devices that are sidewalk-enabled.

Sidewalk uses LoRa and a 900Mhz other signal (for garage door openers). With an SDR that can use that spectrum, you could probably determine if there are sidewalk endpoints around. Might be able to foxhunt them to certain houses.

My plan is to do my best to avoid these devices (FCC IDs may be helpful here), and if I can't, then physically disable them from being able to communicate. Hopefully other folks do the same, and there will be information/a community online to help.

The rest of the world is up a creek, only the 'techno-elite' have the privilege of privacy and being tracking-free. It probably doesn't amount to much, though...