I think we're far past the point where you can avoid being tracked anywhere in the world, and that's even if you wear sunglasses, a hat, and you use no technology (no phone, etc).
Israeli cyber security companies have long trained models capable of recognising anybody (mostly used at checkpoints to catch terrorists), even by lower resolution cameras and when the person tries camouflaging. Police in wales even openly admitted to using it to conduct mass surveillance "to find criminals".
If you've taken an international flight, your face has been scanned, and you will be recognised and spotted wherever you go and there's a camera.
Maybe, but they're also incentivized to make people believe they are doing more than they are, and with higher accuracy, because it makes people give up entirely and make no effort to protect their privacy.