If anything, they would probably prefer advertisements at least tangentially related to the content so that their readers don’t get creeped out by some Amazon p

If anything, they would probably prefer advertisements at least tangentially related to the content so that their readers don’t get creeped out by some Amazon product following them around the internet Which is what Google initially promised web site owners: Targeted advertising. That's why it's called Google AdSense. Because, thanks to Google's crawling ability, it was supposed to sense the content of the page and place appropriate ads there. Only later, as Google's managers became more greedy, did it become ads for forklifts on granny's sausage-making recipe page because must... wring... every... last... penny... for... rhetorical... shareholders... Gah!