You may be onto something there. OR it's a special type of people who are creative. I think there are two sides to the coin. 

I know I'm easily addicted myself, and I'll absolutely call computer games or porn or Poser for addictions. If you've reached a point where it takes over and you feel trustrated/physically ill/irritated whenever you're NOT doing whatever it is, I'd say you're addicted.

Wheter or not something like a Poser addiction is "dangerous" depends on who you are and what you're missing from being obsessively addicted to it. If you starve to death L* because you forget to eat, it's definitely dangerous, but also not a probable scenario. If, OTOH your spouse decides to leave you because all you do is stare into the computer all day.. then it is also both serious and dangerous. 
I do a cold turkey from time to time with Poser. It's very unpleasant, but a necessity.

Then the other side of the coin is people who are already obsessive, like people with OCD or Asperger's Syndrome. While I don't really know any OCD people who do Poser or similar, I know a souple of Aspies, my daughter is one of them. I both hope and fear that she'll start with Poser. Hope, because I'm sure she'll be able to do great things due to her one-track-mind, and fear, because of her one track mind.. will she be able to leave the computer and go to bed? (that's a serious problem for some Aspies, if they're in the middle of something) She's definitely creative already.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.