And yep, from the branding of those devices (which Apple can control much more closely since they provide both hardware and software), the perception is much more likely to be that the svelte, sleek white object protects your privacy.
Over a long timeline though, I don't know whether a closed source ecosystem can prove (or achieve) that.
Maybe the code inside all those components is equally pristine and it all respects your privacy as much as the corresponding advertising claims would suggest. Perhaps time will tell.
I am not sure if it's simply bad marketing but I often feel like a lot of the features Android has are unknown to iPhone users (understandable) but also unknown to many Android users.
I remember a colleague of mine getting an iPhone after being on Android for years. I asked her why she switched and she told me that there were all these great features her friend had told her about that iPhones had. Turns out all those features already existed on Android, they were just unknown to her.
Airtags are different as there is no first party implementation, they're all 3rd party (Tile, samsung, etc).