LEDs are brighter at the same voltage and amperage, but not necessarily blinding. What’s blinding is the idiotic height at which headlights are mounted today, misconfigured headlights (you’re supposed to adjust them as you add more load to your car so they’re angled right, which many people don’t seem to know), and above all, people who don’t know what they’re doing replacing light bulbs with LEDs without the necessary load in series.
If anything, LEDs having MUCH better lifespans than bulbs is saving people.
Light warmth is something the manufacturer controls. There’s nothing (except for maybe regulation somewhere) preventing manufacturers from adding high-CRI LEDs calibrated to warm white to cars. The price difference isn’t that high compared to the price if a car. The harsh, blue light is a choice.
And while there is a difference between LEDs and halogens, it’s not that big of an issue. Especially with competent diffusers over the LEDs.