Do customers know about evergreen timers?

As an e-commerce business owner, I'm curious about how customers perceive and understand evergreen timers - those countdown mechanisms that create a sense of urgency on product pages or during promotions. Do customers recognize these as genuine time-limited offers, or do they view them as manipulative marketing tactics? I want to understand their psychological impact, whether they truly drive conversions, and if customers are becoming more sophisticated in detecting these urgency-creating strategies. Understanding customer perception is crucial for maintaining trust while effectively using these conversion optimization tools.