This is a statement that only makes sense if you think that I, exclusively, have the responsibility to change them for the better. Not even that nobody else could do so, but fantastically, that the responsibility does not lie with they themselves.
If they don't want to change, I'm not going to waste my time trying to convince them to.
The last four years of the American political landscape demonstrate how absolutely thoroughly you are wrong about this.My country has, unlike the US, laws in place that forbid you from even showing up with a swastika flag, doing the Nazi salute is an offense that can get you fined and even jailtime.
And still we have them. Because just forbidding stuff, not talking to them or about them has not the effect that you and so many other wish for: that they cease to exist.
Such ideology has to be dismantled in open discussion and forums, dragged into the light and shown to be the charlatanry it is. Just locking them away and chasing them back into the shadows just gives them time to fester and grow.
Trump's election inflamed these bigots, made them feel empowered and able to speak out more openly. It did not result in conversations leading to widespread deradicalization. It led to the most significant attack on the US Capitol since 1814. It led to steadily increasing rates of hate crimes and domestic terrorism. In just four years.
Your argument was seen to hold merit when we did not have a developed nation that actually endorsed it, and thus had no data for comparison, but we do have that data now, and it seriously indicates that you're completely, deeply wrong about this.
If you have a table of 10 Nazis, and you sit down to have a polite discussion with them, you have a table with 11 Nazis.