For most it seems EA is an argument that despite no charitable donations being made at all, and despite gaining wealth through questionable means it’s still all ethical because it’s theoretically “just more effective” if the person continues to claim that they would in the far future put some money towards these hypothetical “very effective” charitable causes, that just never seems to have materialized yet, and all of cause shouldn’t be perused “until you’ve built your fortune”.
If you're going to assign a discount rate for cash, you also need to assign a similar "discount rate" for future lives saved. Just like investments compound, giving malaria medicine and vitamins to kids who needs him should produce at least as much positive compounding returns.
That future promise doesn't do much good if the planet is dead by the time these guys get around to donating, thanks to the ecological catastrophe caused by their supposedly well-intentioned greed. Also, EA proponents tend to ignore society's opportunity cost here - that money could have been taxed and put to good uses by the public in the meantime. Whatever the inefficiencies of the public sector, at least we can do something to fix it now instead of trusting the promises of billionaires that they will start giving back one day.
For most it seems EA is an argument that despite no charitable donations being made at all, and despite gaining wealth through questionable means it’s still all ethical because it’s theoretically “just more effective” if the person continues to claim that they would in the far future put some money towards these hypothetical “very effective” charitable causes, that just never seems to have materialized yet, and all of cause shouldn’t be perused “until you’ve built your fortune”.