I believe weāre in agreement that the official definition of veganism is vague as you also use words like āambiguityā or āunclearā while describing it. In my comment Iām stating that vagueness of that definition isnāt that much of a problem.
Iām also curious why do you think animal tested ingredient consumption is first-order harm whereas crop deaths are a second-order harm. I can see how tractors crushing animals might be accidental instead of intentional. But when I compare pesticides to animal testing, both of them seem to be instances of intentionally exposing animals to harmful chemicals to improve product quality.
Many grantee organisations report the lessons they learnt to their donors. Open Philanthropy must have accumulated a lot of information on the best practices for animal welfare organisations. As far as I understand, grant makers are wary of giving object level advice and micromanaging grantees. On the other hand, many organisations already spend a lot of time trying to learn about the best (and worst) practices in other organisations. Could Open Phil animal welfare team prepare an anonymised write up about what their grantees report as the reasons for their successes and failures?