"Most expected value is in the far future." Because there are so many potential future lives, the value of the far future dominates the value of any near-term considerations.
Why this needs to be retired: just because a cause has high importance doesn't mean it has high tractability and low crowdedness. It could (and hopefully will soon) be the case that the best interventions for improving the far future are fully funded, and the next best intervention is highly intractable. Moreover, for optimally allocating the EA budget, we care about the expected value of the marginal action, and not average expected value.
"What matters most about our actions is their very long term effects."
Why this needs to be retired: there are only a small number of actions where we have a hope of reasonably estimating long-term effects, namely, actions affecting lock-in events like extinction or misaligned AGI spreading throughout the universe. For all other actions, estimating long-term effects is nearly impossible. Hence, this is not a practical rule to follow.
I think the existence of investing for the future as a meta option to improve the far future essentially invalidates both of your points. Investing money in a long-term fund won’t hit diminishing returns anytime soon. I think of it as the “Give Directly of longtermism”.
Well I’d say that funding lead elimination isn’t longtermist all other things equal. It sounds as if FTX’s motivation for funding it was for community health / PR reasons in which case it may have longtermist benefits through those channels.
Whether longtermists should be patient or not is a tricky, nuanced question which I am unsure about, but I would say I’m more open to patience than most.