I’m not a utilitarian or an A, E or otherwise, so it would be better for someone who is to answer that. But emulating that role as best I can: Of course (a utilitarian would say) one should always do the number one effective thing, if one knows what it is. If one is unsure, then put numbers on the uncertainties and do the number one most-effective-in-expectation thing. If you want to take high vs. low variance of outcome into account (as SBF notably did not), just add that into the utility function. That is what utilitarianism is, and EA is utilitarianism applied to global wellbeing.
I’m not a utilitarian or an A, E or otherwise, so it would be better for someone who is to answer that. But emulating that role as best I can: Of course (a utilitarian would say) one should always do the number one effective thing, if one knows what it is. If one is unsure, then put numbers on the uncertainties and do the number one most-effective-in-expectation thing. If you want to take high vs. low variance of outcome into account (as SBF notably did not), just add that into the utility function. That is what utilitarianism is, and EA is utilitarianism applied to global wellbeing.