You apply an arbitrary filter that deranks 'shitty' sites, and then you play a semantic game about what 'bias' is, and how you don't have it, but all the competing search engines do.
There's no objective measure of what site is 'good', and what site has been 'SEO-gamed' to rise to the top of <arbitrary search engine's algorithm>. The measures are subjective, and people complain when changes to the algorithm aimed at punishing black-hat-SEO also punish their website (Rightly or wrongly).
Not to mention the problem of using black-hat-SEO to punish a competitor (By creating scummy links to them, that make it look like they are trying to game the search engine.)
Growing up, my mother always used to give me books that contained content on page one. This goggle really brings back memories of wandering the dusty library isles of Mediterranean street markets with their pungent spices and beautifully crafted rugs.
There's no objective measure of what site is 'good', and what site has been 'SEO-gamed' to rise to the top of <arbitrary search engine's algorithm>. The measures are subjective, and people complain when changes to the algorithm aimed at punishing black-hat-SEO also punish their website (Rightly or wrongly).
Not to mention the problem of using black-hat-SEO to punish a competitor (By creating scummy links to them, that make it look like they are trying to game the search engine.)