Passive income: NO

Becoming a passive income earner solely from being an online course reviewer is unlikely for most individuals. While it is possible to generate passive income by creating and reviewing courses, it typically requires ongoing work to maintain relevance and keep up with new content. Automation tools and outsourcing could help streamline some aspects, but consistent effort is usually needed. Achieving passive income in this field is more common for a few outliers who have built a large following or have automated their processes extensively. Many people may not reach a fully passive level and may need to supplement their income with other streams. It's important to be aware of the myth that passive income can be easily achieved without ongoing effort in this hustle.