You're wrong---whether it is lying, ignorance, or missing details is beyond me to figure out.
If Microsoft required phone-home connectivity for Windows 7, you'd still have problems after entering the confirmation ID.
Also, network connectivity isn't restricted when the activation grace period expires. You get a black background and annoying prompts, but that's it.
You clearly know jack about Windows activation.
Windows, despite being both genuine and activated, was deactivating itself... I'm not sure what the timeout was but I assume 14 days.
Windows is not activated at the factory. A user must complete the activation process online or over the phone after acquiring it.
The activation grace period is 30 days from first boot.
Once a MAK-licensed system is activated, it stays activated unless someone resets the activation store or makes major changes to the hardware.
Since Windows looks and acts normally within the grace period, that "deactivation" was likely the expiration of the grace period.
But it was very clear that the laptops with frequent internet connections never deactivated themselves, only the ones that sat around offline had the problem.
I assume the frequently-connected laptops completed the activation online without fanfare. By default, they'll prompt the user and be done with it in less than a minute.