Due to the similar content issue, I've slowed down submitting as well. But to answer your question, I doubt it will have any impact on your account. We generally maintain that a minimum of a 50% approval rating is what to aim for, but I believe no one here has ever heard of someone losing their account over a high refusal rate. At that point, it becomes a question of whether it's worth the contributor's time to continue, and only they can make that decision. The number of sales matter as well, regardless of one's refusal rate. If one's assets are selling, despite a low approval rate, is it worth it for that contributor to stay on?