Passive income: NO

User Interviews as a side hustle is unlikely to become a source of passive income for most people. This hustle typically requires active participation, as individuals need to sign up for studies, complete them, and provide feedback. Automation or outsourcing is not feasible because the value lies in personal insights and experiences. While a few outliers might find ways to streamline their participation, such as joining multiple platforms or optimizing their profiles to receive more invites, this still requires ongoing effort. Most people do not reach a passive income level, as the nature of the work demands active involvement. Misleading expectations often arise from the belief that signing up will lead to consistent, effortless income, but in reality, it requires continuous engagement and availability.