First, as a human being, I feel sad for him. I understand that he came back from Singapore where he was getting treatment for cancer. His cancer is so dangerous now and that's why he submitted his resignation. But it isn't official yet. They haven't made an official announcement yet. So as a human being, I sympathize with him.
There are so many hard-liners. If Tin Aung Myint Oo goes, then new hard-liners will come in. Don't forget, Tin Aung Myint Oo was elected, and nominated by the military bloc, during their presidential elections. I think you know about that, right? They have the combination of the lower house and the upper house, which become the electoral college. They were divided into three. One is an elected person from the lower house; another is an elected person from the upper house; and another is a military representative sitting in the lower and upper house.
After one nomination each, there were the three candidates for the presidency. After that, the electoral college made a vote. The guy who got the most votes became the president, which was Thein Sein. Tin Aung Myint Oo was nominated by the military. He got the second most votes.
According to the constitution, if Tin Aung Myint Oo resigns, then the military will have a chance to nominate one of their own to this position. So one hard-liner goes, but a new hard-liner will come in.