I’ve yet to hear of effective altruism from anyone less wealthy me. Seems to be weirdly lumped among the rich.

To be fair to its adherents (of which I am not one), the so-called philosophy espouses maximizing income, so that one can later allocate that wealth efficiently. Working in a low-earning field which directly provides aid to those in need would seem to violate a core precept of 'Effective Altruism'.