and why not? Looking at his post he's already got considerable engagement and here it sits (as I type) on the front page of HN.
He's made a list where each point fits a single tweet, so it's not awkward to read, and twitter makes chaining posts pretty trivial (plus of course it can be unrolled easily).
Sure he could have done a "traditional" post somewhere like medium, but would that really have made a difference to the message he's delivering?
