Assuming every Go user on the planet fills it out.

They don’t have to care about the super rare cases, and in practice they never did. The survey has already a more than big enough sample to take the right decisions.

> But the users can still report issues.

They can, but do they? Russ' very first blog post gave several examples where major issues slipped under the radar because they went unreported. The example that sticks in my mind is that they accidentally introduced a dependency on a c compiler on Mac that was not reported for over a year simply because users assumed it was meant to be a dependency.

Several counterexamples were listed in the article.