[gblargg]

If watching with an adblocker is stealing because the video creator doesn't get ad revenue, is not watching also stealing, since they also don't get revenue? If not, how is one taking from them and the other not? What have they lost in the first case but not in the second?

[bobsmooth]

It costs money to serve video. In exchange for being served the video, you watch the ad. By not watching the ad, you're stealing from YouTube and creators.