Earlier quoted context omitted.
Did you read the piece? It goes more than just "being exposed to an ad." It's about implementing unpredictable UX around ads.
Yes. I read it. The presence of the ability to skip an ad or not is entirely obvious when you're on YouTube. Sometimes you can't skip an ad, that's not surprising nor dark. It is right in front of you and the result is obvious.
You still seem to be missing the point OP was making though. The dark pattern isn't that you can't skip the ad.