> WTF is “an anecdotal metric”

It's a metric (how much more productive he is), and anecdotal (base only on his experience). Pretty obvious I would have thought.

> This seems very domain-specific.

It was an example from one domain but all domains have types of things. Are you really trying to say that only 3D games specifically would benefit from static types?

> Just because somebody disagrees with you, it doesn’t mean they are a clueless junior.

Clueless senior then I guess? Honestly I don't know how you can have this much experience and still not come to the obvious conclusion. Perhaps you only write small scripts or solo projects where it's more feasible to get away without static types?

What would you say to someone who said "I have 25 years of experience reading books with punctuation and I think that punctuation is a waste of time. Just because you disagree with me doesn't mean I'm clueless."?