In terms of computing efficiency the big gain is that people use their smartphones drastically more than they do a personal computer at home, on average. And smartphones are hyper efficient compared to personal computers or laptops. An average use laptop will use ~30-60 times more energy than a once-daily charged smartphone across a year.

That also goes for people watching things on their smartphones instead of a 65" television.

Yeah, I forgot about the smartphone shift in that comment.

Even people who have laptops, the shift to smartphones and tablets for much (maybe most? IDK I'm still a laptop person at minimum when I write this so it's hard to say) of their computing/communication is another order of magnitude change for sure.

As another side note/anecdata, I still remember the amazement where the aftermath of a nasty (mostly wind) storm in 2017 caused major outages in my region. I had just moved into an apartment and due to the lagging maintenance around makeready/treetrim it took the better part of a week to get power back. Thankfully however, I had a fully charged, fancy-ish APS Backup unit [0] that was able to keep my Surface Pro 3 and 4G Hotspot charged enough to at least not feel totally in the dark. It was crazy to see how even with both charging the 'time remaining' indicator said I could have used both way more than I even needed to.

[0] - Some variant of an APS 1500VA