They've also done an admirable job marketing the specifics of what they do. What's left is all the places where they don't respect the privacy of their users because there's limited marketing value. They don't claim E2E on many services because they don't have it, and adding it wouldn't help marketing. My guess is some Tier 1 support person can drop in and take a look at the GPS pings from your phone.
But don't take my word for it. The Atlantic is far more reputable: https://www.theatlantic.com/technology/archive/2019/01/apple...
Your E2E argument is poorly supported as well — “marketing value” doesn’t explain why it’s for messaging and keys but not photos and files. They have one of the strongest E2E encrypted messaging systems, it even works securely in China. There are technical reasons why E2E is not a good choice for all consumer data namely the impossibility of data recovery.
They do very tightly control the features available on their products, so your question really hinges on how they will perceive automobile travel destinations: like features or like personal data?
(Also, HN etiquette tip: don’t complain about downvoting.)