They are actually removing the ability to control ads in the near future. To my understanding, the only ads creators will have full control over are midroll ads.

They will be improving ads on the platform by removing the creator's control over them.

> optimizing creator revenue and taking the guesswork out of which ad formats to use by removing individual ad controls for pre-roll, post-roll, skippable, and non-skippable ads on newly uploaded videos.

https://support.google.com/youtube/thread/233723152/simplify...