IMHO, the vast majority of users aren't computer-geeks, conspiracy-theorists or tinfoil-hatters, and wouldn't have the faintest notion about what updates are for, or how they affect the running of the system. For them, automatic updates are a no-brainier.

I certainly didn't understand the significance of updates that I was notified were ready for installation when I was on 8.1 and XP, and I have an IT background going back to 1968, when I worked on a mainframe and was a COBOL programmer.

Towards the end of my 8.1 time, I was constantly frustrated by 'updates' which I was told needed installing, and which then fell over when I tried to install them, or required restart after restart. But then, I didn't know why they needed installing, I just did it because MS said so. What's the difference with the Win 10 'automatic' updates?