Regarding point 2, I’d argue that both “honesty” and “non-violence” are implied by the actual text of the fourth principle on the page:
Collaborative spirit: It’s often possible to achieve more by working together, and doing this effectively requires high standards of honesty, integrity, and compassion. Effective altruism does not mean supporting ‘ends justify the means’ reasoning, but rather is about being a good citizen, while ambitiously working toward a better world.
I think this text, or something very similar, has been a part of this list since at least 2018. It directly calls out honesty as important, and I think the use of “compassion” and the discouragement of “ends justify the means” reasoning both point clearly towards “don’t do bad things to other people”, where “bad things” include (but are not limited to) violence.
Regarding point 2, I’d argue that both “honesty” and “non-violence” are implied by the actual text of the fourth principle on the page:
I think this text, or something very similar, has been a part of this list since at least 2018. It directly calls out honesty as important, and I think the use of “compassion” and the discouragement of “ends justify the means” reasoning both point clearly towards “don’t do bad things to other people”, where “bad things” include (but are not limited to) violence.
I think honestly is clearly mentioned there but don’t think non-violence specifically is implied there.
Regardless, my case is for honesty and non-violence to both be listed separately as core principles for greater emphasis.