This is some consumerist bullshit propaganda.
The key to happiness is to learn to control the "want" in the first place. That new dress, that fancy coffee, those taper candles, the travel, all the things that the author mentions in this article. All of these things they claim people are "putting off" allegedly because of some quirk of how our psychology has evolved... How much of that is truly responsible for our happiness?
I found I was happiest in my life whenever I stopped wanting things and appreciated the things that I had. I stopped caring about the latest videogame or movie or TV show or book that everyone around me was talking about. I stopped caring abojt appealing to fashion and body standards everyone else wanted to impose upon me. I stopped caring about fancy expensive whisky, wine, cheese. I stopped caring about fancy expensive restaurants. I stopped caring about "experiences".
Once you have "enough", buying and doing these things stops adding happiness. I know people who have much more expensive guitsr collections than I do but never have time to play them. I have gotten tens of thousands of hours of pleasure out of the guitar that cost my parents $150 back in 2003 when I was a kid, and I still play it today. I love jiat sitting on my back porch watching the squirrels, birds, bees, groundhogs, lightning bugs, deer, and batsat various times of year. The feeling of the sun on my feet. The feeling of sweating while doing yard work or shoveling snow. Kissing my wife in her forehead every morning while she's still asleep and i'm about to go to work. Holding my cat on my shoulder, feeling her lean up against my face and purr. Eating a ripe and juicy nectarine.
I didn't want it super blocky so I did 4x4s with some metal brackets and 3d printed rollers. Took a bit of work but found some scrap steel so I went to work.