That’s stupid. She just estimated that the series will end after season 6, which is a good guess according to ratings. Last year Jane espenson estimated 7 seasons (I honestly don’t see that happen). Adam just tries to calm down crazy fans who likes to freak out about everything. It’s not his decision when to end the show, it’s abc’s. People just need to accept that OUAT is closer to the end and that happens, no show lasts forever (except fron Grey’s Anatomy) and after OUAT ends, people will continue with their lives and will find another show to freak about.