Sure, let's all start worrying, like Chicken Little. No one else but us could possible know what they're doing.
Counterfeit / substandard products? Always a problem, ever the challenge. Yet we didn't disband our air forces and airlines when it was discovered that some fake parts had entered the supply chain.
As for the 'separation' issues .... seems the computer folks got there decades ago. Already I have some ports / jacks that are 'power only,' while some others surprised me with their ability to handle data as well.
Data wires? What are those?
It seems that everything is going 'wireless.' I've seen wireless devices with 100-ft. ranges. Data, music, alarms ..... all 'wireless.' Secure? Just how do you think the gas pump communicates with that satellite?