Is it possible to be addicted to tech?

Yes. Anything done in excess is unhealthy. It is important to notice how you feel after a binge session with your drug of choice (tech). Feeling guilty for not completing a task instead? Unfulfilled? Lonely? Listless? Sad? Useless? These all all signs that there may be an underlying untreated reason for your excessive use. Talk to a psychologist to help you better cope and balance out your life.
A state of mind. Actions/habits that dominate our behavior can displace or substitute other physiologic and social activities. If your relation with technology is sabotaging other social and physiologic needs, you may want to consult a mental health provider.