Well, I will choose to be on the side of whatever will not cause anyone any form of discomfort, because personally myself, I hate it very much when ever I am being interrupted with an ad while watching any interesting stuff on the screen, this is one of the reasons why I would forever prefer to download stuffs from YouTube for example; if there was a way, than stream because the ads are sometimes always too much.
We live in different countries and the way ads are displayed to consumers may differ from country to country depending on the laws that govern the country, so for me, like I've said before, I will stand on the side of what will not cause viewers discomfort, if normalizing gambling ads during sporting events would have a lot of people complaining, then it shouldnt be normalized, but the ad companies should rather device strategic ways or means through which they can advertise their products without hurting viewers.