I'm outdated. I used to have 4 different python interpreter builds, for different purposes, where the modern world would be using lua as a glue language. I had nothing like the scale, staff, or budget of Discord; all I had was need and tools that could bend to fill it.

I think this is a great write up of why they chose a different tool. I don't say it was the wrong decision, they make that argument pretty well too. I'm still surprised that either Go isn't malleable enough to have bent around the need, or they didn't feel it worth more effort than parameter tweaking to bend it so.