I'm about to enhance my Polycount Blender addon so as to get the real verts count, but I need to do some tests and of course make comparisons between my stats on some 3D engine stats. As I haven't work on Unity since few years I was a bit suprised by these defaults statitics: 1.7k tri / 5k verts, what the heck? So OK, this…
@rollin nailed it from what I understand. The way the camera works is a render texture. So the two triangles are from the plane at the end of the camera that it is drawing to
Then better don't set it to "don't clear" ;) Honestly I can't tell you exactly what's going on bc I don't have time to go through it thoroughly but you can see if you use the Frame Debuger that there is at least an ImageEffect Quad rendered which is probably 4 verts and 2 tries..