A color palette challenge I did.
Thank you for the link! I appreciate it!
You can read about the distinction PJ makes between oekaki and pixel art in this tutorial. The key is pixel-level control, making sure each pixel is where it needs to be and avoiding placing pixels where they work against your intent. If you're creating shapes and lines with no care about their exact shapes, largely letting your brush dictate the shapes of your lines, the pixels making up the piece don't really matter, do they?
The line between oekaki and pixel art is definitely blurry. I feel that your work is probably being accepted in good faith as "bad pixel art". By that I mean that it has poor execution of pixel art techniques, not that your drawing skills are bad - as oekaki, it's good!
I understand where you are coming from, but I don't quite understand what you mean as for the colors being under control. As long as my art is being approved here, I don't see any reason to change it. Personally, Oekaki seems like another way to make pixel art to me, mostly like an artistic process. I put my speedpaint of this in the description, so if there's anything you see that I've been using that is considered "oekaki", let me know. I'm still learning about what Oekaki is.
This looks more like oekaki than pixel art - there's no automatic AA and the colours are fully under your control, but there's not much pixel-level polish and the lines and edges are full of jaggies. That's a fine way to start a piece, but you may want to give it more polish.