Bruno was not executed for his view that we live in a vast universe with vast numbers of planets.
Atheists say people in the Western tradition had to wait for modern science to grasp that the universe was huge, and had to shed historic Judeo-Christian views to do so.
Newton was arguing from science, not religion. But that doesn’t fit the Epicurean mythos that religion opposes naturalism while science confirms it.
The Drake equation is simply the product of a set of factors, estimating the number of active, technologically advanced, communicating civilizations in our galaxy.
If life in the universe is singular, if we’re it and there is no other life, whether intelligent or otherwise, what’s the bad news about that, and what’s the good news?