“When South Park made fun of Scientology, Isaac Hayes quit the show. [At the time, series co-creator Matt Stone essentially said it was a hypocritical move because] he was apparently fine with making fun of every other religion. So the show had his character brainwashed by an evil cult then brutally killed.”
—aditson
However, 10 years later, his son and estate manager, Isaac Hayes III, told the Hollywood Reporter, “Isaac Hayes did not quit South Park; someone quit South Park for him. What happened was that, in January 2006, my dad had a stroke and lost the ability to speak. He really didn’t have that much comprehension, and he had to relearn to play the piano and a lot of different things. He was in no position to resign under his own knowledge. At the time, everybody around my father was involved in Scientology — his assistants, the core group of people. So someone quit South Park on Isaac Hayes’ behalf. We don’t know who.”
Source: https://www.buzzfeed.com/kristenharris1/tv-characters-written-off-drama
