I think often about Mahalo, the sleazy shovel content that was spamming the web back in 2007. Google shut that down somewhat fast, although it did take several years. These days with AI and more aggressive spammers it's a losing battle. The real problem is the financial incentives that make this kind of spamming profitable in the first place.
My tiny little blog gets about 3 requests a week for someone to "pay me to run a guest article". Going rate is $50-$200 and again, my blog is tiny.