I second this. I think you should. Becoming comfortable with your own voice, regardless of your stutter, is one way to overcome it. You don't even have to upload the first video. Make 5 videos just for yourself and get a feel for the process of it: how you feel talking into a mic, talking on the spot about the game, etc etc. If it's truly something you want, go for it, or you'll spend a long time wondering what if.