Note how the top comments here branch into criticizing Google?
It takes a lot to change people's opinions in such matters. It just easier to repeat the same old same old arguments and continue with our lives...
Some companies work on providing the illusion that they care about privacy. But at the end of the day, unless it's convenient for them, and does not interfere with their goal, you should assume the worst.
This is not a theoretical concern: I can buy an iPad for my parents, turn of iCloud & Siri, install an Ad-blocker and they will be reasonably safe from cybercriminals and spyware companies like Google.