Deno does also but I'm less clear on well how that is working out for them.
All go package imports are proxied via Google.
https://drewdevault.com/2022/05/25/Google-has-been-DDoSing-s...
https://drewdevault.com/2021/08/06/goproxy-breaks-go.html
Not that defaults don't matter, just offering the extra detail. And, as the post goes on to explain, this change seems to cause its own set of dependency issues.
I'm not familiar with the technical details, but at first glance it appears pretty centralised.
https://docs.deno.com/runtime/fundamentals/modules/#https-im...
