So I assume there is no published methodology, so its complete garbage.
Shoulnt be discussed at all, seriously.
It may be a long running experiment /PR op by some valve employee for all we know, to see how info spreads, reactions and such matters, not saying malicious, plus bonus keeps you talked about, for free.
As mentioned, I too cant see the difficulty of having hyper accurate data on, gpu, cpu, ram, hdd and a number of hardware aspecs are core part of programs, more so games funcioning correctly so why would the steam client itself not have data.
Are we forgetting each and every chip since the 90s? Has a unique id number, this across basically every cpu ever made arm x86 whatever.
The client likely has everything, everysingle cpu id everything. No names and adresses needed.
Fantasy to think otherwise.
Why they dont use it, idk, probably its trade secret style data, hence do this weird PR survey crap. Matter of fact even if they mention methodology, i convinced myself its a PR tool end of story.