In the author's defense, the story, specially Tai's route, greatly elaborates on the biology of these anthropomorphic animal men, their tragic apocalyptic backstory, and most importantly, why the MC/Player suddenly goes mad with sexual lust & promiscuity -- which is partly out of his control, due to an external force tampering with his hormones.
Sadly, I did feel repulsed by the MC's behavior, specifically the disgusting toxic threesome that ensued. Although it does play into the MC's later character growth also.