The difference is you can leave your spouse, an option not really realistic for a child.
Google doesn't need to know who I am to track me, Google cannot lock me up in my room, Google cannot gaslight/manipulate/abuse me based on where I went today
And even in the context of abusive relationships, sometimes the more tools the abuser has, the more secure they feel in their abuse, the less impactful is their abuse on daily lives of the abused. The abusers get worse when they feel like they are loosing control.
If I finally agree to something after being nagged interminably - have I consented, or have I just given in?
At the other end of the spectrum, if someone asks for something which doesn't particularly suit my purposes, but I agree to it as it seems fair enough - is that consent?
One situation seems like it is, the other one probably not. But where is the line? To me, consent seems like a vaguely letter-of-the-law, CYA type of word.
I feel like as a teen I would consent to being tracked by my parents but that doesn't mean it would be a good idea. It all depends on intent and parent-child relationship in the first place (looking back I didn't have a great one :shrug:)