You're trying to talk sense into a PIB specimen.
It won't work.
Discussion
Sometimes you have to try to plant a seed 🌱. I was very idealistic as a kid too, but my views grew to be more complex. If people stop talking to each other, we'll never truly grow.
That's true and kind of you for trying but as you have perhaps noticed, the specimen in question has already cut you off.
9 times out of 10, it's a waste of time trying to argue with these people. They will only learn from their foolishness when their life comes crashing down around their ears. Perhaps not even then.