Realistically, if that rumored Google / Nest tracking platform launches and slowly makes its way onto every active Android phone, Google will have the world’s largest BT tracker network, and Google’s platform will be the biggest stalker threat. But right now, AirTags are at the top of the stalker risk pile.
Sure, Google could currently watch out for Tiles and the other odd balls, but those products are likely to quickly fizzle out unless they get on to Apple current and Google’s upcoming platforms. Also, those products are inaccurate and kind of suck.