Other than fitness, I don't have any desire to spend money on these things. I have averaged about $1100/year on fitness so far in retirement. But, I pretty much expected that because I am constantly battling a pretty bad overweight problem so I can't just ignore fitness expenses (which include Weight Watchers, the gym, equipment for my home gym, various gizmos like my Fitbit and HRM, and so much more).
Travel - - really? You all know how much I dislike travel.
Pets - - I don't have a pet because I'm not ready for the responsibility. The vet bills are frightful. But the worst part is that they die before we do and break our hearts. I have a teddy bear instead.
Education - - Seriously? From pre-school on I spent 28 years in school.
After all that I ended up with a B.A., B.S.E.E., M.S., Ph.D, A.B.D, and various certifications. All of these are in science/engineering areas. I can't seem to go through a day without looking for (and finding) new things to learn and I don't see the need any more formal education. The author/source of your quote (where is it from, by the way?) might be surprised to discover that I actually use the internet for more than browsing porn.
High Tech Home - - My home is fine as is, thank-you-very-much. In the unlikely event that I should see any upgrades that I would even casually like, I'll get right on it. But meanwhile, it is already pretty high tech in all of the ways that matter to me.
Really, the expense that I have had to add to my retirement budget is dental work, which seems to be much more expensive now than it was when I was younger. I love my dental implants but they weren't cheap.