ok, let’s go down that rabbithole...
homosexuals have a high incidence of AIDS. AIDS kills. therefore all homosexuals MUST have liability insurance before engaging in buggery.
hip hop (rap) music is the music of choice of gang bangers. gang bangers murder lots of people. therefore anyone wanting to purchase/listen to hip hop (rap) music MUST have liability insurance.
in the name of atheism/secular humanism/islam, untold millions of people have been murdered. therefore atheists/secular humanists/muslims MUST have liability insurance.
etc.
when you make a tenuous argument like that moron in NY, it’s not too hard to extend it ad absurdum.
Still no answer to the question...
How does requiring liability car insurance equate to fewer car fatalities?