Their show would be so much better on regular CBS where they would be forced to be creative instead of just sticking F words where the jokes should be. I think because they are on Showtime they feel obligated to do this over the top schtick just because they can.
That’s the problem with pretty much everything on HBO and Showtime (with the exception of the Sopranos). Everybody feels the need to be “too hot for TV” and ends up sounding absurd.