Well we know one thing about Rome. When sexual deviations reached the peak -> Rome collapsed and imperium was divided.

Was it because of deviations ? Who knows. They also had alot of issues going on in the meantime. But you are free to have own opinion based on histories available. I for sure have my own.

Also about Ancient Grece. „Meet my Spartans”.. Either way if the show plot has nothing more to offer, its just boring.