Your lisp criticism is orthogonal to the idea of lisp itself. Lisps like Coalton (lambda calculus) or Shen (sequent calculus) are strongly typed.
AI is an interesting point too where being closer to a raw AST is likely an advantage because it can focus more on the semantics instead of the syntax.
You can wrap parentheses around anything and call it Lisp, but I specified Common Lisp and pg's article clearly wasn't contemplating anything like Shen. Surface syntax is near irrelevant though.
I feel you're now contradicting your own statements now. You said: "[maybe] Lisp is just another Blub", but when pointed out that Lisp (and Lispers) is evolving, you're saying "pg clearly meant [the other Lisp]"...
Of course we're not talking about "parenthesis". Clojure even added square brackets for arguments and destructuring, it's not about the syntax, I agree on that.
Last I checked, both of these were built on top of Common Lisp/SBCL.