I fail to see how this game is "sjw propoganda"

Oh, dear, the common "apples to oranges" refutation.

The context of the argument is that a normal, straight marriage between a man and a woman is the baseline. That is why it is called "straight", as in reference to the straight and narrow from the Messiah in the Gospel accounts. That is why LGBTQ call themselves "LGBTQ" because because they are deviating from that baseline. That is why they refer to those who do not behave such as straight in comparison.

Incestuous/beastiality is a deviation from the norm. That is a simple fact. As such, it fits the criteria alongside LGBTQ. That is why the comparison is made and that is why people hate the argument; because its the truth.

To argue otherwise is to claim that a marriage between a man and woman is not the baseline.

That is plainly absurd.