No! Copywriters are completely unique in their experience and knowledge and are skilled in many different ways. Some prefer to niche down and only write about certain sectors, such as healthcare, travel, technology, entertainment, or food and drink. Others, like myself, prefer to use a certain tone of voice, while other copy and content writers work best doing one aspect of writing, such as email campaigns or script writing.
When you choose a copywriter to work with, make sure that they specialise in the type of copy and content that you need.