Kids deserve to go places without being monitored.
No, as minors under the legal authority and responsibility of parents, they literally do not. Particularly the age range these target.
only in dystopian minds of absolute bunkers murcians, where kids can't even simply walk to school all play in the yard all by themselves... "land of the free" ammairight?
America varies widely, but to address the portrayal you've given:
1.) Most of us live in areas where we need cars to get around. It's a 10 minute drive to my kid's school. Walking is impractical for many, and we don't have the public transportation network many in Europe have (though with an often less dense population, less walkability buys us larger homes and yards; there are pro.s and con.s).
2.) Many kids 'can' play in the yard alone, but don't want to. Like mine. Indoors it's air conditioned, there's the Internet, video gaming, video-conferencing with buddies, etc... And not everyone lives close to their friends.
So yes, a lot of kids spend a lot of time indoors or on arranged 'playdates,' but that's not always due to a paranoid 'helicopter' parent hovering over them.
Is the kid a cat or a dog now?
That would be easier. You can spay or neuter your pet, and it's extremely low risk to go mess with illegal drugs. I have a kid, cat and 4 dogs, and the kid is more worrisome to deal with than the other 5 combined. Granted, she doesn't shed as much...
For example, my daughter often takes off her watch (because she likes it but sometimes it bothers her wrist and she forgets it somewhere), and sometimes she puts on and takes off necklaces.
Good point for kids who mostly wear one pair of shoes; the Apple Watch is often taken off to charge if nothing else!
Some parents get used to these tools and don’t want to give them up, even as the child becomes a preteen and should start having some rights to privacy, or at least discussion and consent.
The 'rights to privacy' thing you mention, and 'consent' is interesting, and probably goes beyond the scope of this thread. I'm old enough to've watched American culture shift. Preteens are minors; they can't legally enter binding contracts, for the most part can't consent to medical care, and remain the responsibility of their parents. Despite all that, I get the impression some people (not saying you) believe they have the right to sneak around behind their parents' backs, fornicate (with risks of pregnancy and STDs) and engage in illegal drug use, hang out with 'the wrong crowd' (an opening line to many a tale of tragedy), etc...
I get that parental supervision can be paranoid and over-controlling, and there are limits to what one can do.
Ironically, in light of concerns expressed in some posts, the way to monitor older kids is not with an Apple AirTag in their shoe, it's with the iPhone in their pocket. An older kid can strategically leave her shoe at a friends while she sneaks off to see some boy, but leaving her iPhone behind? She certainly could, but some people are tightly bound to them (I joke it's my wife's 3rd kidney).
It's also worth noting having your position known isn't a one way thing. Yes, I can track my kid by her watch or phone, but she can track me and her mother the same basic ways. It's handy when I want to know if her Church group is nearly back from a trip and ready for pickup, etc... We don't keep up with each other because of a 'surveillance state,' but because it's handy to know where we all are.