My hope is that with the end of Windows 10 coming up, laptops with 7th generation CPUs will become really cheap, such as ThinkPad P51 and P71. They are a decent budget choice < 1k USD/EUR already, but might drop way under 500 with top specs.

It's not like they are useless, but the market for Linux users should be satiated quickly once a selling panic sets in.

For most use cases, including backend development, they'll be good enough for many years to come. tbh, I'm still happy with my i5-2500 from 2011 and 16 GB RAM, and that is with local DB, application server, IDE and everything running locally.