Why do I need a course on how to draft a pitch deck?

Because, your pitch deck is your one shot to grab attention of investors. As a founder you cannot afford to miss opportunities because you did not take the time and effort to draft it adequately. Even more importantly when most of the time it is "cold" contacts you try to leverage.

Founders who want to avoid common mistakes but also save time and distress while working on it, should really consider this course. The price is competitive and nowhere near to the perceived high value gained by taking it.