Those were examples meant to get you thinking about how data points you might not have realized even were data points or that they could be collected and combined.

I'm truing to impress on you that there is not just a dozen or so avenues to take your data that you need to think about (cloud based anything, phones, computers, TVs, payment cards), its thousands of them.

Literally every single service shares with nearly every other service through the advertising network.

The only reason that this is even still a discussion is because it can't be prevent they dont do something. No matter what proof is out forward, noone would ever 100% say anything about it. Its still more likely that your data was combined aggressively enough with those around you to the extent it felt akin to spying.