I'm also curious. You react quite strongly. Is it because of chemicals causing the effect? Is it about the light it produces? Is there a loud sound involved? (This seems most reasonable.)
Discussion
Yes yes and yes
I can't speak for the sound. Obviously the rocket isn't silent. The propulsion might not be as bad as you think. I think they're powered by methane and oxygen, which are (composed off) quite common elements. I'm not sure if that exact rocket, but I remember hearing/reading about this as one of novel construction choices.