The article says building a new laptop uses between 3-4.3 megajoules. For reference, 4 megajoules is 1.1MWh, which is roughly 1 month of per-capita energy usage in the US/Europe:

https://solar.lowtechmagazine.com/2020/12/how-and-why-i-stop...

So, if you stopped buying laptops once a year, this would reduce your energy footprint by about 10%.