Earlier quoted context omitted.
The topic was the telegraph network, which did not have that property.
Uh... no? The topic is "undersea internet cables", it's right there at the top of the page. It's true this subthread became a digression about telegraphs, and I thought it was important to bring things back to the actual subject being discussed, as it doesn't share the property that made telegraph sabotage a notable idea.
The comment you're replying to:
> Because it takes 1 person, in an isolated spot to ruin a whole chunk of a network.
Is, in fact, about the telegraph network. Thus your objection to it is bootless, because it isn't true about the telegraph network, which is the topic of that comment. The fact that it's true of other things doesn't really matter, because most wrong statements might be correct if made about some other topic.