A stronger option is:
“Someone who believes that to be a good altruist, you should use evidence and reason to do the most good with your altruistic actions, and puts at least some time or money behind the things they therefore believe will do the most good”
A stronger option is:
“Someone who believes that to be a good altruist, you should use evidence and reason to do the most good with your altruistic actions, and puts at least some time or money behind the things they therefore believe will do the most good”