YouTube's 'dislike' and 'not interested' ineffective to curb suggestions: Study

As per a study by Mozilla, YouTube's in-app controls such as the 'dislike' button are largely ineffective for controlling suggested content. The study revealed that 'not interested' and 'dislike' prevented only 11% and 12% of bad recommendations respectively. 'Don't recommend channel' and 'remove from history' buttons were found to be more effective as they prevented 43% and 29% suggestions.