So once I see an ad, I know that the video has peaked and can stop watching? Cool

No I won’t ;)

And this is news?

It seems to me that YT has been doing that for quite a while already.

This sounds like an upgrade from them showing me ads before ‘peak’ moments

When i started seeing these waveforms on the playback controls, i wondered how they could be profitable. Now I know.

Great so I can see the highlight of the video and then close out before the ad?

this is peak physiological manipulation