How is me installing that going to help prevent Facebook hosting unlawful adverts?

I barely visit the FB feed these days, about half of those visits being a notification that turns out to be someone's birthday.

Unlike FB themselves for the content they host, I find it easy to avoid them without needing the help of a filter, because on the rare occasion when I find myself being sucked into scrolling down the feed, this almost always stops within 3 items because that's how quickly I find the first utterly irrelevant item owing to how Facebook keeps trying to suggest (and advertise) nonsense.

The filter I want to see in the world is the legislative kind, the "Meta delenda est" style. This is of course *not* what Facebook would want: spammers want to break FB's filters, and FB would try to get past legislative filters. I count FB as a spammer trying to put ads into every third message you try to exchange with your friends.