Perhaps I should have said it's easier to write tooling. C++ has arguably very good tooling but creating it was difficult.
For Rust and Go the example I'm thinking of is rustfmt and gofmt.
For Rust and Go the example I'm thinking of is rustfmt and gofmt.
That said, if you're talking about source code formatters, I'm pretty sure that clang-format predates gofmt (and surely clang-format was not the first automatic source code formatter for C++). The coup for Go was that they got the community at large to standardize upon and champion gofmt, which is not something that C++ has ever matched.
How useful the extra tooling is, I don't really know.
The extra stuff that rustfmt does stems from the fact that rustfmt wants to aesthetically format code well, matching the style that the community had settled on prior to its introduction (e.g. avoiding long lines, lining up parameters), while gofmt is fine with less aesthetically pleasing code (long lines, all parameters on one line) as long as the implementation of gofmt remains simple. There's nothing stopping anyone from implementing a bare-bones rustfmt in the style of gofmt and trying to push its style onto the community, but Nick had different goals.