Yeah you should definitely read people's reviews. This is why I decided against using them and it's why the gps tracking ones with a subscription exist.

Because airtags are Bluetooth.

That's why they can be so small and use such little power.

Still useful to find your keys. Or track luggage if you are at the airport where it is.

It can also keep track of location pings. Meaning you can see where something was the last time it connected.

It's still useful. It's just not a gps tracker.