Far from me the idea to downplay the horror that must be quitting a long-formed addiction to methamphetamine or heroin, but I think downplaying non-chemical addictions as "bad habits" is an unfair characterization as well.
YMMV, but in my own experience for what it is worth, I've seen little difference and much parallel between quitting cigarettes (after 10 years of ~15 cigs/day), weed (after 11 years of ~1-1.5g/day) and Internet time-wasters (.. a W.I.P., many-to-most hours a day). Haven't gamed in a while now, but the loop of self-hatred and coping where each day you tell yourself "tomorrow is a new dawn" has felt eerily similar to each day telling yourself you're done smoking after this pack - which you make sure to finish so you wake-up without any left - until you're walking right back to the convenience store begrudgingly before noon. Rinse and repeat for months and years until, eventually, it actually sticks for some reason and you get past the first few months without giving in to your triggers (failing which you're basically back to square one). The pull to grab a smoke never really goes away, although it actually stinks after a few months, you just learn to tell yourself "no". The same way going to the dispensary remains tempting, but you remind yourself how it actually makes you feel after you smoke beyond the habitual dopamine hit. The same way reinstalling LoL or whatever gets tempting when you don't want to do what you need to do, but you manage to control yourself knowing you won't get any satisfaction from it.
I know it sounds dumb, I know none of these are comparable to an opioid addiction (despite what some say about nicotine, I refuse to believe it is harder to quit then opioids) and I don't think I'm able to properly word how I'm trying to say w.r.t. addiction, but I really think, for myself, that my addictions acted in a very similar way on my psyche. They're all self-destructive ways (for me and my usage) of coping with my negative emotions and anxieties, the "pull" to each when trying to quit and the hoops my brain'd go through to justify giving in to a trigger felt very similar, chemical or not. If anything, quitting cigarettes was the "easiest" and avoiding wasting hours a day on unfulfilling Internet activities remains the hardest.