You can manage, or control, whichever, your-own territory: you can't control other people's/factions' territories.
Fact of life.
It isn't that anybody "can" make the internet safe, or healthy, rather, it is that we have to make good internet successfully compete in the ecology, & therefore remain viable when the DarkTetrad motivations { narcissism, machiavellianism, sociopathy-psychopathy, sadism } are trying to gut/murder good from the world.
Natural Selection! Successfully compete, & remain in the ecology!
Simple as that.
( PS: reading Logan, King, & Dr. Fischer-Wright's book "Tribal Leadership" would be competence-growing, as it's on the 5 culture/process levels, from gang/mass-shooter's competitive-nihilism CultureLevel1 to "LIVING IS SELF-INHERENTLY AWESOME!!" CultureLevel5. They incorrectly call them "stages", but caterpillar->moth is stages, these usually revert to CultureLevel2, subject-to-narcissism culture..
Here's the book itself: https://www.kobo.com/us/en/ebook/tribal-leadership-revised-edition
& here's the TED Talk with the oversimplified intro to that work: https://www.ted.com/talks/david_logan_tribal_leadership
IF the people managing or leading communities were all competent in those levels, & their natures & functions, THEN it'd be easier to de-toxify our portion of the world. )
_ /\ _