You're certainly entitled to that viewpoint. The point is that:

"Google's harvest of medical data includes names and full details of millions"

is hyperbole, when

"Google partners with health system on clinical documentation research" is more accurate.

I'm a proponent of more consumer control over their data, along the lines of GDPR. You could, theoretically, request that your covered entities give you a copy and then delete all of your records from their systems at any time.

Which for consumer data Google already gives you the option to do so (e.g. takeout.google.com)