APA defines addiction as a complex condition, a brain disease that is manifested by compulsive substance use despite harmful consequence. By that logic why should your compulsive urge to be on social media be any different.
Kapil Gupta puts this very eloquently in this quote:
"Life is not too short. It is, in fact, too long. The pervasive fear of mankind is not the fear of death. It is the fear of not knowing what to do with his life. It is not the fear of having too little time. It is the fear of not knowing how to fill it."