No, what makes you insecure is pretending youre a writer, when you know you arent. Thats why writers are perpetually insecure, in a nutshell. The advice youre giving is bad advice, as in, literally bad for you.
This is nonsense. What does entitle someone to be called "a writer" other than, you know, writing things? If you're writing - you're a writer. If you've practiced enough to develop good skill - you're a good writer. If you've found a way to make money with it - you're a professional writer.
Writing is never bad for you. It's like saying that you shouldn't be pretending to be a programmer, when you know you arent. What the fuck does that even mean?
First you aren't a writer/programmer. Then you pretend to be a writer/programmer, by attempting to do what writers/programmers do. Then, if you keep doing it long enough, you become one.
I'm not really trying to be abrasive or argumentative but your logic doesn't make sense to me and your comments are dismissive and you resort to ad hominem attacks which don't add any value. Which kind of proves your point if you take yourself as an example.
Please do elaborate and explain how and why I should be ashamed of myself because I really don't know how writing can ever be bad for anyone.