> How many users browse the internet through Google's cache?
A more pertinent question is how many Chinese users would gladly browse the internet through Google's cache, if it were available to them.
A fair guess is a number at least as large as the number of Chinese users who used to browse the internet through VPNs before the government cracked down on those (nearly 1 in 3 of all Chinese internet users, according to [1], i.e. hundreds of millions).
> Splitting hairs over cache vs. linking the dead website is ignoring the point.
The point, which you appear to have missed, is that you can't expect the censorship to work as implied by the statement I responded to. Google wouldn't be allowed to simply serve up the same search results as outside China. It would have to remove them entirely.
[1] https://www.goldenfrog.com/blog/china-cracks-down-on-vpn-use...