I tell this to my in-laws as well, but they don't seem to understand the difference between hackers and privacy invaders. Yes, Apple and Google want to know you

I tell this to my in-laws as well, but they don't seem to understand the difference between hackers and privacy invaders. Yes, Apple and Google want to know you, but, in general they know they security stuff and won't try to fool you with it. But they think it's about the same as giving data to hackers that want to scam them. He thinks for example that using a Gmail address as an apple account makes it magically so that both companies now know everything about you. I have a hard time explaining the difference between security/data-protection and hacking. In a way I understand them. Google wanting to track you is nefarious but still, the security from viruses/hackers/cryptolocking viruses is unmatched for a Chromebook or an iPad. My own father wants privacy, has has Apple products, he doesn't want (i/any)Cloud, I buy him a Synology NAS saying the data is his, then Photos libraries go corrupt because the NAS does not have APFS attributes (damn thing works for months until it doesn't). What a nightmare. And I'm explaining all this to a man that doesn't really understand where his Browser ends and the internet starts. So he will wonder if his data is on his Macbook because he can see it in the browser logged into the Synolgy. And then he won't close the browser because the Synology is backing up... It's pretty complex if you think about it. I can understand all the distrust.