Design Patterns in Smalltalk

It is often said that design patterns are mostly used in statically typed languages like C++ and Java, which I also agree. But in this article Robert Martin wrote

What a strange thing to say. Smalltalk, a dynamic language, played a significant role.

Since I don't have experience in Smalltalk I would like to ask if patterns like Strategy or Visitor are much used in Smalltalk? I don't think you need them in a "dynamic language"