You do realize that this is a free website, right? Generally speaking, websites that do not charge membership fees make revenue through advertisements. By running an ad blocker while browsing a free site like YWN you are taking revenue away from the site. I’m not a Rabbi so I won’t go into whether or not that is some sort of stealing but by blocking ads you are artificially lowering the amount of views YWN’s ads get and thereby lowering the amount of money they make.
Also, you mention Google Ads… just so you know, those are shown based on one’s browsing history so whatever ads you are seeing will be ads they have determined you have an interest in. As an example, when I see a Google Ad it’s usually for some sort of electronics or gadgets because that’s what I use the computer for. If one sees questionable ads in a Google Ad banner… one needs to evaluate their browsing habits.