Complex sentence: The controversy was incited by accusations made in August 2014 against game developer Zoe Quinn that led to anonymous harassment against her., though the issues under debate date back at least to the 2012 controversy over Tropes vs. Women in Video Games.
Split into simpler sentences: The controversy was incited by accusations made in August 2014 against game developer Zoe Quinn that led to anonymous harassment against her. The issues under debate precede that incident, dating at least to the 2012 controversy over Tropes vs. Women in Video Games.