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.