I don’t disagree with the idea that code-switchers introduce new vocabulary to the general public at all, in fact, the two terms describe a word or phrase at different phases of its journey to integration within a language. In other words, there exists a point in the history of the language or dialect, the use of word or phrase ceases to be code-switching and becomes widely accepted as imported vocabulary.

There is a distinction, however, that not all words that are used via code-switching are going to become part of common enough vernacular that it would become accepted within a language, and likewise, there may be cases where loanwords do not enter a language via speakers that code-switch it into their daily vocabulary.