Google engineers can't even filter out GH or SO scraped sites like gitmemory, nor offer a way to let users block these sites. I'm not sure we should expect them to handle more advanced techniques like detecting word swaps any time soon.
The main reason I haven't tried this yet is I am concerned what would happen if every result is one of these spam sites that has fooled Google engineers for so long. Do I get a suspiciously blank page?
The other reason is I started using a search engine that cracked the code to let users rank and block sites (kagi) so I don't have to worry about it.
That isn't how it works. Long term refusal to do it isn't evidence their engineers are incapable of it. Blacklisting sites is trivial. They've always been able to do it and they do it routinely to this day.
The reason those results remain in your searches is because sending people to those sites makes Google money, and by definition that is of greater value to Google than the quality and relevance of your search results as a non-paying user.
