Could exoplanets support life that has a different chemical composition? Absent details about the composition, who knows?
A far more effective materialist response to fine-tuning is the “Copernican” Principle (though Copernicus would have rejected it), sometimes called the Principle of Mediocrity.
What help has materialism been in understanding the universe’s beginnings?
As a journalist who has covered the intelligent design controversy for 12 years, I ended up asking a question repeatedly: What exactly has materialism done for science?