Users appreciate the plugin primarily for its ability to significantly enhance site speed and performance, making it a preferred choice for many. It rivals other optimization tools like WP Rocket and Autoptimize, with some users reporting drastically improved metrics, such as reduced loading times and higher PageSpeed scores. Clearfy is easy to set up, offering a plethora of customizable features that aid in optimization without overwhelming users. However, there are notable drawbacks: developer support seems unresponsive, the plugin may introduce bugs or be incompatible with other plugins, and recent updates have been reported to disable important features. Users also express concerns about unwanted changes, such as the inclusion of ads or spammy notifications.