Wow. How convoluted could the language be on this feature?
On the pop-up: "Ask App Not To Track" or "Allow"; why not simply 'Block Tracking" or 'Allow Tracking'?
Then if you go into Settings > Privacy > Tracking, you are faced with "Allow Apps to Request to Track". This could be off or on when you get there. So you might wonder, "If it is off, does this mean the app gets to track me? And when it is on, have I given them permission to track me, or is that vise-versa?" The guidance directly under that switch does nothing to clarify the issue.
Turns out, if you go into 'Learn more...' the language gets even more confusing, into doublespeak and possibly even double negative. Turns out (I think) that if you leave the switch off, iOS will block all requests automatically and you'll not see the pop-up screen on newly installed / updated apps. If you leave the switch on, you will see these pop-ups and, if you use "Ask App Not To Track", it will list them in the Settings > Privacy > Tracking section, for you to later change your mind on.
Couldn't they have simply called it "Tracking", with the instruction that "Off means that tracking is subject to user choice (the pop-up window per each new / updated app), while On blocks all tracking, and no pop-up is seen"?
Some tech writer with Apple spending too much time in his bedroom 'office' during the pandemic, and not enough time talking to real, live people.