Let's imagine the same scenario, you live to 90 but for every person treated today, 2 people die due to drug resistant bacteria in 40 years. Your scenario only works if drug resistant bacteria won't kill more people in the future than we could save today. The hopeful solution is that medical science will catch up and be able to deal with resistance. There's no reason to let people die today for a theoretical, but let's not stick our heads in the sand.
Longtermist spotted, deploy the pig feces
Is climate activism also longtermist by your metrics? We're not talking about the sun exploding, we're talking about stuff you and I will live to see.
maybe, but it's good longtermism and not insane eugenics longtermism