I would totally watch your videos, regardless if you choose to show your face or not. I think you have some of the smartest, well-worded yet funny comments around here. There are many youtubers talking about certain political&social topics and not showing their faces (to name a few I used to watch, Sargon of Akkad - although over the years he started showing his face, Black Pigeon Speaks, Omegon, Bearing, TL;DR and I can assure you there are many other smaller ones). Some of these channels also have at least some content on fat and obesity.