I'm glad those articles helped. I do think it is possible to be addicted to masturbation, but if and when you get a sexual partner then masturbation should be less intrusive... in fact, it might help, since you'll know your own body, and what you want.
I had similar issues around masturbation at one stage in my life, and thought I'd never be able to gain pleasure the "normal" way. When I met my second husband though that fear completely disappeared. He used to ask me exactly what I liked, and then playfully experiment. Sex was great, and I didn't need to masturbate as much anymore.
You are young, at sixteen I imagine you're inexperienced (at least I hope so!) There's a lot to worry about at your age. Here's one less thing to worry about.