Last October, YouTube noted that not only did the use of ad-blockers violate its terms of service, but it also keeps creators from getting paid for their hard work. In January, Google took a different tact and greatly slowed down the load time of YouTube videos unless the ad-blocker was removed. Now we are about to welcome the month of June and Google’s next step, as we mentioned above, is to skip a video selected by a user to the very end if an ad-blocker is detected. When the ad-blocker is removed, YouTube will show the complete video.
Video shows how YouTube content is going straight to the end for those using an ad blocker
New Youtube adblock weird behaviour – video automatically skips to the end
byu/SDHD4K inyoutube
Google wants you to sign up for YouTube Premium which does not show ads
While you might consider a YouTube ad to be annoying, there are 86,400 seconds in each day so having to use some of them in order to watch a YouTube video is not a big deal in the scheme of things.