I always suspected YouTube pays attention at ad breakes because every time they would dare starting a video with 40/50 seconds of unskippable ads (happens on the tv app only, they never dared on desktop/laptop) I just exit the video, reopen it (or another), and I'm served for a goos hour 15 to 25 second ad max.

And yes, I went for Premium which I find outrageously expensive.