He did model the beneficial outcomes of altruism: the other blob survives and passes on its genes.
He did not model the prisoners dilemma at all, as none of the blobs ever make a decision. Cowards and Impostors always flee, and Suckers always sacrifice, and True Beards always sacrifice for Green Beards.
The prisoners dilemma is that the local optimum, if you cannot coordinate with other prisoners, is choosing what is guaranteed best for yourself.
That is literally how he designed the impostors and cowards. They are always choosing what is best for themselves. So yes, what he created was the model of the prisoners dilemma.
He did model the beneficial outcomes of altruism: the other blob survives and passes on its genes.
He did not model the prisoners dilemma at all, as none of the blobs ever make a decision. Cowards and Impostors always flee, and Suckers always sacrifice, and True Beards always sacrifice for Green Beards.
The prisoners dilemma is that the local optimum, if you cannot coordinate with other prisoners, is choosing what is guaranteed best for yourself.
That is literally how he designed the impostors and cowards. They are always choosing what is best for themselves. So yes, what he created was the model of the prisoners dilemma.