Consider factors like the age of the universe, stars growing more metallic as they form starting with elements that can only be made by others going supernova,

Consider factors like the age of the universe, stars growing more metallic as they form starting with elements that can only be made by others going supernova, and chances of the planet not being hit by a supernova strong enough to sterilize the planet for billions of years. The great filter isn't necessarily still yet to come.