The dumbest thing they're doing is still making DSLRs. The mirror adds weight, the assembly can be a source of leaking light, it vibrates and wears out the cam

The dumbest thing they're doing is still making DSLRs. The mirror adds weight, the assembly can be a source of leaking light, it vibrates and wears out the camera, and offers no benefit of any sort. When the output comes from the sensor anyway, you might as well have a digital viewfinder that gives you the sensor's view.