Thank you for sharing your experience. The ban exists for a myriad of reasons that I'm sure you already know, but I appreciate you taking the time to share your perspective.
I would like to offer encouragement regarding your concerns. NaNoRenO is, at its heart, "amateur." It was born from a hobby community, and it predates the days of (English) visual novels being about polish, scale, or money. It's not a competition. There are no prizes, and nothing is ranked. There is a wealth of creative commons content made specifically for jams like NaNo to help people with art, music, even code. But it's been my experience that even my own extremely okay scribbles have been warmly welcomed every time I've taken part, and I suspect anything you make will surpass my own attempts back in the day. I am looking forward to seeing what you make.