Not ridiculous at all. Ads for (for example) heart pills are on TV now, placed at great cost, but currently blaring to an audience of mostly disinterested targets. Imagine being able to cheaply target the subset of those people who are not just part of a certain demographic, but who actually (for example) saw a cardiologist or went to the ER on a heart-attack scare in the last 12 months.

yea right. same thing with facebook asking for phone numbers for two factor. they would NEVER use that for ads, right?

Every interaction with my health provider's website has links to double click and google analytics.

This includes test results, doctor communication, and even the feedback page where I composed and sent my complaint.

That are all kind of unhappy situations it could lead to, depending on just how far off the deep end Google/Alphabet goes.

As an example, lets say they identify 50 specific people who are going to die next week due to (say) a heart attack.

They could decide to only notify those people who are friendly to the Google/Alphabet world view. With the others purposely not being notified.

The point being, stuff like this can be misused and Google/Alphabet is well down the path of doing dodgy stuff already. :(

They use your location data to serve ads. Why wouldn't they use your health care data? Is this a satire comment?