I think you’ve hit that proverbial nail (please excuse the cliche) on the head when it comes to writing. The only one I don’t agree with you is that you are not a writer. If you write, & for as long as you write, you hold the title of “writer.” It’s actually that simple. You don’t have to get a degree or write for more than a ??? (insert any specific time unit here).
Nor do you have to have a platform, & I would fight with anyone who says differently! In time, you may choose topics you prefer, sure, or you may not choose to do that, as well!
And if you happen to help people along the way (which you do, you’ve helped me understand more people) as well as entertain, I’d say you’re living a whole, complete life!