> That's an anecdote; facts are that serious critical bugs that lead to privilege escalation and loss of data have existed in codebases that would surely have been caught by various static type systems.

An anecdote at this point is at least better than a baseless claim as you're making.

Also keep in mind the article is in the context of Lisp, so it would be static types on top of a garbage collected memory managed runtime with runtime type checks.