The Amazon search function is easily disabled or removed from the system. Or if you are using a DE other then Unity, isn't there to begin with.
It is my understanding (not positive on the way apt behaves, but yum/dnf works this way) that since apt-get update/upgrade has no way to report back to Canonical since it's just an HTTP/FTP request to a random mirror, which only occurs when you tell it to run anyway. Plus, Microsoft is doing much more then just checking for updates (it checks and installs at will in Windows 10, you can not disable it in Home/Pro versions).
In summary - it's not so similar after all in scope or in your ability to control it.