And what's the network like? Are there many devices out there reporting the position of those tags? Or is it just Motorola devices with their 5% market share?
It runs on Google's Find My device network. All android smartphones which support the latest location reporting are supported. Though, how it works in practice can be different.
I thought that wasn't launched yet? Do they backport and enable that per default to compete with the mass of iPhones, or is it going to be a rare occurence that a tracker gets reported?
I know that's the general sentiment for online discourse. I think it amounts to a rounding error in terms of total population. I'm confident it'll improve. Maybe never be better than airtags... But I expect better than now.
It should be compatible on most android smartphones running the latest version of play services. The default should work for lost smartphones and items in high traffic areas. So, tracking in low density areas may be spotty.
Launch the Find My Device app. Click your avatar and click find my device settings. You should network options and the granularity with to enable or disable the option.
Theoretically good as it could use any android device with Google services installed - in practice not as good as airtags as Google made it opt-in and nobody ever changes default settings