increase of Rejection rates

When I first started submitting AI-generated content to Adobe Stock, acceptance rates were around 90%, even though overall AI quality at that time was far lower than today. In the early stages I was submitting only 4K AI videos and they were consistently accepted.
 

About a year later, my acceptance rate dropped to roughly 50, so I adapted and began submitting HD instead of 4K. Recently, however, things have worsened again, over the past month acceptance has fallen close to 10% for both AI images and video, even though I am still submitting HD and maintaining the same production standards.

What’s concerning is that during this entire period, AI model output quality has improved massively, and my own selection and QC standards have become much stricter, yet acceptance has continued to decline.

I’ve also significantly reduced my upload volume and now submit around 10 videos per day, all carefully curated and manually processed. Despite this, acceptance has not improved, and most recent rejections are labeled simply as “Quality.”

At this point I see no option but to stop submissions.

Based on what I’ve seen reported in forums, contributors who have only recently started submitting AI content are often mentioning much higher acceptance rates. From the outside, this makes it seem like the steep decline may be affecting long-term, higher-volume AI contributors more than newer ones.

Is anyone else seeing a similar long-term downward trend in AI acceptance rates?