Not really. Its a string of preferences for Python's development. I hope the author pursues those endeavors and encourages others to join him. But they're not an argument against pattern matching.
Talking about preferences still qualifies as interesting discussion.
As someone who hasn’t been following closely, was the PEG parser necessary for pattern matching or is that an unrelated change?
IIRC one of Guido’s reasons for switching to a PEG parser was to enable the addition of pattern matching.
And it allowed some non-intuitive parser limitations to be lifted, like full expressions in decorators (@buttons[0].click) and parentheses in context expressions (https://bugs.python.org/issue12782).