Earlier quoted context omitted.
This might be controversial, but I wish Google would exclude those websites too. Google started punishing keyword spam, then it started punishing black-hat comment spam. Even Youtube backtracked on the "videos have to be 10 minutes to rank". I wish they would do the same for carefully manicured SEO content farms too, as those sites are causing a harm worse than keyword-spammer sites did.
They're probably doing all they can. The problem is their dominance, both means they have effectively an entire industry looking for loopholes in everything they do, as well as legal considerations (arbitrarily punishing individual smaller actors might skirt on the territory of anti-competitive behavior)
I jest a little bit, but your comment genuinely makes me wonder if Marginalia++ is search results - Google - Marginalia