I have misophonia and also Intermittent Explosive Disorder. One time I asked a friend to stop smacking his gum and he did it more. I blacked out and punched him and made his lips bleed. I couldn't help it and it just happened all of a sudden. When you suffer from misophonia the worst thing that can happen is for someone to ask a stranger to stop.
The article uses the word "annoyed" a lot, which is patently false. We get tangible feelings of anxiety from each sound we hear. The longer we're exposed to it, the worse it gets. It can lead to depression, anger, suicidal thoughts, explosions, and homicidal ideation as well. It's much much much more than just being "annoyed."
Thankfully, I've calmed down over the years and my misophonia doesn't have nearly as much control over my life. The general food noises, popcorn, and slurping coffee doesn't bother me as much. Finger sucking and gum popping make me dissociate still, though.