> And Go has succeeded despite these condescending diatribes on how a language needs to have a Hindley-Milner type system with ADTs and type classes to be useful
Fine. But it's beside your parent comment's point. The article claims that everyone thought Go's type system was an advance on the state of the art. This isn't even close to true.
Amen. I’ll give Microsoft crap any day, but the most popular language on Earth is now routinely developed with a sane type interpreter that eliminates entire error categories.