The ACA is the Atheist Community of Austin.
They do a popular YouTube show called the Atheist Experience. Matt was one of the most popular hosts but there have been many hosts throughout the show's history. He's a real firebrand and hangs up on rude theist especially when they are lying.
He said on the show he would no longer host and he's saying he's not supporting the ACA on another show he does. Which is kind of strange since he is a former office holder of the ACA and he has supported the ACA for decades.
Anyway, does anyone have inside info on this?