Yes. It serves its purpose and is a good idea, but I saw multiple builds based on it that were off (things like: when do you need an aftermarket cooler, when a mainboard with a Z-chipset, …). My https://www.pc-kombo.de/ is an alternative approach which I think is more accurate, and also less work than pcpartpicker, that is why I took the liberty to mention it here.

That looks pretty cool!

Too bad about the language barrier, but I'm guessing more languages (such as spanish or english) are in the roadmap somewhere.

Thanks. Yes, they are :) Currently working on making the hardware selection both broader, customizable and more reliable, and then I'll try (again, turned out to be hard so far) to get into some US-american APIs.