sure, people always waste their time, but it used to be actual social interactions, which are actually helpful and constructive. the difference is that modern social media is designed and adjusted for maximized eyeball metrics. if you specifically design and develop an app to make the user more and more addicted to it, so you can profit from advertisement, it is your fault. considering everything else it does to you, such as impacted self-esteem, algorithmic exposure to controversial material, and trained quick gratification-seeking. it’s pretty damaging for society as a whole.