I don't think this article really overdramatizes things; if I had written "zomg Go is terrible look what I need to write to delete an item from a list!" – a sentiment I've seen expressed a few times over the years – then, yeah, sure.
But that's not really what the article says. As it mentions, I don't think these are insurmountable issues, and I still like and use Go: it's pretty much my go-to language these days. Overall, I think it did a lot of things right. But that doesn't mean it's perfect or can't be improved.
The curse of having landed on the HN front page. You write a little blog post with some random thoughts, somebody found it insightful and posts it to HN and if more people like it, it ends up on the front page. That exposure tends to attach a wide-ranging seriousness to this kind of blog post which may dramatically overinflate the point that it originally intended to make.
I used "dramatize" to describe the blog post (in such that the blog post was written) and then "overdramatize" at the end in reference to my own infinite list of annoyances with Go and the normal course of discussion on HN about proglangs.
The blog post does admit "Are these insurmountable problems? No." Learning it in 5 minutes certainly is a stretch as you point out, but I'd still say you can learn it in a weekend to a greater degree than any other language I use.
Though you'll notice my comment after the first sentences is a way to share my own thoughts on Go, an opportunity I'm never going to neglect.
But that's not really what the article says. As it mentions, I don't think these are insurmountable issues, and I still like and use Go: it's pretty much my go-to language these days. Overall, I think it did a lot of things right. But that doesn't mean it's perfect or can't be improved.