I wonder what the overlap between visitors to a site that would display this and visitors not already using an adblocker is. Then again I've seen developers with ads plastered all over their screens before, I'd like to believe it's a conscious decision on their part.

Now that I think of it, when a professional YouTuber shows their browser, more often than not, there is no ad-blocking. But as professional YouTubers, there is no way they are not aware of ad-blocking.

I wonder if they actually watch the ads on purpose, even in private or if they turn their adblocker off just for the video, as not to give ideas to their viewers and potentially losing ad revenue.

I see it since I don't have adblockers installed.

Instead of adblockers, I remember sites that are user hostile one way or another and just avoid those sites. Those sites that are heavy on ads usually aren't worth my time anyway, so the presence of those auto-playing videos in every corner ends up being a signal for me to go somewhere else.