I watched a Warframe (game) YouTube video on the Steam integrated browser, without beeing connected to my account and Holly s* it was horrible.
In a 14 minutes video, I got 5 ads. 1 (or more skippable once) at the beginning, 1 during the first half of the video, 2 during the second half, and 1 at the end.
All were skippable after 5 sec.
2 were close together at about 1 min interval during the second half of the video.
But that is not the only issue. 4 of those ads (not the last one at the end), were Israeli hate/war anti-hamas propaganda.
I consider these ads horrible and they should not be allowed in my opinion.
Now on mobile they even open up the sidebar where the playlist normally is and puts an extra ad there too. Then it breaks your fullscreen and youre left with the comments open and a banner ad. So dumb.