If not mistaken, Indonesia too taking opportunity of the Japanese collapse in WW2 to pave their independence road, Dutch already getting crush by the Japs for years. For SS, think SS people at that time still romanticizing about the British era, they don't go extreme like what Sukarno did, opportunity when Japanese and the Dutch already crazily weak after years of WW2.

SS don't have an opportunist like Sukarno at that time, Sukarno understand the opportunity to kill two already weak bird Japs and Dutch with one risky stone. Just fight the Dutch wherever they still in power around their region, also learn as much about tactic and management from the losing colonizer Japanese after they getting nuked.

It's just a "should be" scenario. If SS and Malaya have someone like opportunist Sukarno, probably Merdeka earlier on their own. But the situation in Malaya and SS side, British and gang still wanna fight the japanese at all cost until the end, while Indonesia situation both Japanese and the Dutch already look like a one leg soldier, all they have left is ego and past glory memory, this is opportunity.

Another opportunist country leader is India, they know it's the right time to play around with the almost bankrupt British after WW2 finish. Earlier independence gain.