Nope it will not, the only thing that this BSP Circular did was at least let the people know that BSP is monitoring the exchangers activity in the Philippines.
Bitcoin users in the Philippines has been using exchangers without the supervision of BSP, this circular will just increase the fees and ask for more identification before Bitcoin users can cash out. So nothing new exactly but I think this will turn off more people in using Bitcoin. We want to use Bitcoin because we want anonymity but with this exchangers asking for a lot of ID's then its RIP anonymity.
Like what kind of illegal activities in the Philippines do you know that Bitcoin was used.