This bans hasn't nothing to do with pirate sites that have scams and deceptive design patterns? The last time I visited the pirate bay without ublock origin, I was bombarded with ads with scummy copy like "you won x" or "stream for free now", fake search results, adult ads, and deceptive invisible clickable areas on top of the UI that opened new tabs with suspicious full page ads.

I never followed those links but I'm sure that it will ended up on installing malware or asking for credit cards.

I will understand if the Google Search algorithm de-ranks or bans sites like that, many people totally will fall to this scams.