Consider that paper filters may be more environmentally friendly than metal ones. Just look at a comparison of CO2 emissions between reusable bags and paper ones as an example. You’ll probably have to use a metal filter thousands of times more past its expected life span to break even with how much CO2 making it released into the atmosphere.
Even in case that is true - 1000 uses is about a year at 3 brews a day and my french press is still going strong after 15 years and I fail to see a reason why it wouldn't hold up another 15 years.
Do you have any sources on paper vs metal? It seems highly unlikely to me, that paper filters could be more environmentally friendly.
