Earlier quoted context omitted.
Believe it or not but "the internet" and "the world wide web" are not synonyms.
True. But the vast majority of use goes via "WWW". For example email - the other big "internet-user" is technically not part of the WWW, but most (? I don't have any stats, just a guess) of our mailclients run on the WWW, nonetheless.
There are roads (or shall I say tubes?). There are cars and busses on the road. Over time, almost everyone has migrated to just a few bus companies. One of them suffers a complete collapse for a few hours. Yes, this means chaos when it comes to transporting people. But the roads are just fine.
This doesn't mean that the situation is fine and that people aren't affected. But it would be entirely different if the roads had been washed away or something.