A lot of assumptions are made here about intelligent life with the great filter ideas. Intelligent life is not a fundamental phase of matter. It took a random walk over billions of years to end up there, with any point potentially leading to a deviation and entirely different outcome. Take the number of bacteria dividing over the last 4 billion years on earth to one and there’s your rate of intelligent life in the universe based on what we’ve seen on earth. Are there even that many planets or bodies in the galaxy for what a billion to the power of a billion to one odds or whatever absurd number this is?