I don't think it's a counting issue but that the various experiments that YouTube did recently to block adblockers are causing people with adblockers to leave the page early before the video starts playing, because they are greated with infinite loading spinners, incomplete page loads or in the best case 10 second delays until the video starts.

I happily watch the embedded ad-segments of YouTubers, but not the aggressive scam/slop-ads that YouTube puts before the actual videos thank-you-very-much.