Yeah, the “eyepiece” portion of the telescope is sort of Earth sized, but missing a lot of information that is interpolated and added in by computers. Even then, because the Earth is so tiny relative to other celestial bodies, the image gleaned is not much better than what we already see. It’s better, but not by much. I think it’s going to be centuries before we get a good idea of what a Black Hole really looks like. By then, we may have a telescope array as large as our solar system.
You can never see a black hole ...