That is a straw man. Nobody claims there are not issues in other software.
The claim here is that people in dynamic languages tend to misuse that and write all sorts of magic that are pure gold for 10-line snippets but open up a vast attack surface, like building completely arbitrary objects from string input.
The claim here is that people in dynamic languages tend to misuse that and write all sorts of magic that are pure gold for 10-line snippets but open up a vast attack surface, like building completely arbitrary objects from string input.