[I’m not sure how much I believe this, this just barely passed my threshold of post-worthiness.]
It seems to me that the greatest beneficiaries of Effective Altruism might very well be its proponents, who help others in a linear fashion but help themselves in a non-linear fashion. This might be justified in a Rawlsian way, such that Effective Altruists should be allowed to enjoy their generosity greatly so long as it helps others sufficiently.
Effective Altruism is recursive self-satisfaction. The Effective Altruist is doing good, which feels good, which helps them do more good, which makes them feel even better, and so on. But the altruistic upshot of their exponentially positive experience is only additive, because recipients of altruism at best feel neutral about charity and at worst feel guilty, embarrassed, or ashamed. Malaria nets are wonderful things, and saving a life is no small feat, but one life is worth one life and if a malaria net saves one life then ten malaria nets save ten lives. For the practitioner of Effective Altruism, however, giving one malaria net is a potentially never-ending well of eudaemonia. None of this is to deny the value of Effective Altruism, it is only to observe where a large proportion of the psychological gains are really enjoyed.