It's difficult, as if someone says why not try such and such a hotel and tell you that its great and then you try it and it isn't then normally there is no harm done. Perhaps a bad night's sleep or a less than enjoyable experience. I think with visiting Mindanao there is more at stake than an uncomfortable bed or a bad meal that you might encounter in the wrong hotel. Try Mindanao and see for yourself is not like trying a night in a hotel or a resort.
People who are reticent to go to Mindanao on someones recommendation are so as they perceive that the risks of danger are higher there, based on what they have been told by others or read etc. Maybe they are wrong, maybe they are right. As far as they are concerned they are not sure and probably correct in being cautious. My perception is that venturing into Mindanao is risky. I really don't know one end of Mindanao from the other. Maybe one day I will take the risk.
Another way of looking at it is that there are many other places to visit in the Philippines so it is understandable that some might leave Mindanao low on their list of priorities.
I sincerely hope that this new peace process works. I think that will help enormously.