I compared highend 2010 desktop to highend 2021 laptop on my use case (which is arguably much lighter). And for my workloads, the laptop is no more a limiting factor (which is great, but not a leap from 2010 desktop). I can imagine todays desktops could be much better compared to todays highend laptops, but it feels like the most of what I do, there is little reasons to upgrade. Which is also great. With Macs the latest macOS support is removed usually from 5 years old machines, but that feels mostly baseless from technical perspective as with hacks you can still run the latest just fine.
Perhaps it is a nostalgia / romancy. Having a 12 years old machine as you daily workhorse where upgrade was not a leap. That is something I haven’t seen before, and I have been in this industry since 90ies and a PC user since 80ies.