I generally think people care too much about CPU specs when buying a computer, but I do also think that no one should be buying a Core 2 Duo in 2023 unless they really know what they are getting themselves into, and have participated in the Old Computer Challenge at least once. And the prices Technoethical are asking for them look like prices for collectors, not for users. I use a ThinkPad X230 (early-generation i5) for my daily driver, but it's upgraded in a few important ways, and, notably, though I have a pile of X230s, I have never paid more than $150 for one (before upgrades).
Yeah but like compiling large programs can take half an hour with an average CPU while making the system really sluggish. A developer working on large projects at their free-time could save a lot of time with a fast CPU