The headline and the paragraphs lead up to an illustration how the IP type in Go is inelegant because of several shortcomings in Go. It's a perfectly acceptable instrument to the argument.

It immediately follows up with interesting discussion about how it's acceptable for a team of experts to use Go. I think he's wrong, Go is perfectly powerful in the hands of novices. And I actually think a team of experts like Tailscale would probably be much better served by choosing Rust.

But that's all besides the point. The article is excellent, fits our forum and is a great basis for discussion. You are not using the flagging feature as it's intended to be used.