The only thing it proved is that we have the capability of coordinating farflung telescopes to focus (more or less) on a single point in the universe an amazing distance from us. But this has been done already, many times over. And the picture isn't that great. It looks like they need to adjust the focal point a million or so light years. Or maybe close the aperture. Or reduce the exposure time.
You have demonstrated with these few words that you have absolutely no idea what you're talking about by applying your superficial knowledge about photography to this specific case of radiointerferometry. There simply is no basis for a serious debate of the topic with you.
The picture of a black hole about the size of our solar system from a distance of more than 50 million light years is a triumph of measurement engineering that is almost on the level of the proof of gravity waves a few years ago. It is nobody's fault but your own if you miss the significance of it.
