We are running a small experiment where 0.3% of viewers will see an auto-generated thumbnail, instead of your custom thumbnail. We are not removing the ability to create your custom thumbnail, but we hope to gain insights on auto-generated thumbnails for the future.
It really would be far more helpful if you fixed your demonetization problems and also fixed the unethical problems of demonetizing words like transgender and gay before you focused on something nobody asked for.
