I think they’re making a bit of a joke here. It’s just progress.

I don’t think “most” have fiber to the home, first of all. Cable companies in the US do multigig speeds via fiber to a relay and coax cable to the home. Fiber is great when it’s underground or in a data center and safe, but it is delicate and easy to break the cables so not a great home solution. Fiber terminations are difficult and more expensive. The power efficiency payoff on a 1m cable from your router to your pc is probably going to be measured decades, more if you factor in the higher cost of the cable.