What is the meaning of "dizzying" here? Is it okay to not use the word "dizzying" here?
The term "dizzying" is used for things or situations which make someone feel unsteady, confused, or amazed. In this case, it refers to being amazed. The narrator is saying that the number of tools he has is amazing. If we omit the word "dizzying" the sentence would lack the nuance of "amazement". The point is to let us know that he doesn't just simply have a variety of tools but an amazing number of tools. Ex: The pace of modern life can be dizzying. Ex: The professor gave us a dizzying amount of information on the first day of class.