I wonder why it was easier to build an image of this black hole at 16.4 million parsecs (53 million light-years) from Earth and not the one from the center of our galaxy which is at 26,000 light-years.
Saggitarius A* at the center of our galaxy is at the center of our galaxy, obscured by a soup of stars. This distant black hole on the other hand is positioned so that it's activity is visible to us.