You talk about morals, but did you consider that they are releasing the model as open source, and given that OpenAI and others do the same, Zuck is really the only current option to have a reasonably comparable open source model? Also, did you consider that it might be more moral to create an AI model than to uphold copyright law, which actually many on this site deem immoral?
IMHO this is a moral win on Zuck side.