Mine is also (Aether - https://getaether.net). I’ve also gotten comments reflecting on this same thing. I love Go. It is boring: it makes sure that I focus on doing interesting things, not on writing interesting code.
Go is simpler than most other high performance languages - easy to read and understand unfamiliar codebases. It helps that go compiles to native binaries for various platforms and runs with no or minimal dependencies.
I would mostly attribute this to go’s compositional and prescriptive nature. Go sort of pushes you toward building highly reusable pieces that can be combined to create a system. It does that in a way that’s incredibly easy to grok, which allows developer communities to more easily grow around products.
I would say that go is very compositional in a simple manner that makes it easy to grok and hence the tools end up being highly reusable.
Not all languages push you toward decomposition, but I would argue its the most important trait of a language and its community.
But you know how programming language discussions go =P
On a more serious note, I do think it’s probably related to group identity (or described as “tribes” in popular media) that explains it.
A large project using their language of choice (Go in this instance) gives external validation that their tribe is growing, and thus having made the correct choice to join it.