JAKARTA — The region’s jarring social media jousting means that platforms such as Twitter are not really “social” anymore, but have become “weaponized” according to Indonesian political analyst Wimar Witoelar, who has 439,000 Twitter followers. “So interaction is more often divisive than not. You cannot form a consensus. Instead you sharpen your differences,” he said via WhatsApp. Even Joko Widodo, Indonesia’s president, is not immune to savaging on social media, taking to Facebook in September to make his point. “I was asked, ‘President Jokowi, how is the state of social media in Indonesia?’, I replied, ‘In Indonesia, it can get very vicious,” he posted.