Comment by bityard

Google used to do this years ago but clawed it back around the time they started removing _all_ customizations under the premise of, "we know how to customize your results better than you do."

DuckDuckGo has site blocking. The problem is that there are so many SEO-optimized blogspam, referral link, and other "garbage" sites that you could spend a lifetime blocking each one individually before you get any actual work done. And it's only getting worse now that LLMs can generate a whole web site for you in a matter of minutes. I imagine a dedicated individual could provision several thousand websites/blogs per day, just chock full of ads and referral links.