Imdb rating drove him to suicide
Actually it was mental illness or German TV poll. Imdb bio:
Was voted by the viewers of the German TV channel Pro7 as the most annoying personality of 2003 out of 100 people.
In September 9, 2018, he disappeared after jumping off a cruise ship. Küblböck was a private passenger on the cruise liner AIDAluna, which left Hamburg for New York City on August 29, 2018. He jumped overboard at about five o'clock in the morning while the ship was in open waters about 185 km north of St. John's in the Labrador Sea, with a water temperature of about 10 °C (50 °F). On September 10, the Canadian Coast Guard abandoned the search.