PSA: Turn of your strobing headlamps when you're on the trail.

Just venting here a bit.

On a two-way trail, just after sunrise, another rider going the the opposite direction, passed me with his bright headlamp on and strobing.

I kindly said something as I passed, but when I passed by him again, he still had it on.

The bright headlamp was one thing, but the rapid strobing interfered with my vision even moreso.

Unless I'm missing something, isn't this poor bike etiquette?