Eugene is Gay

I agree, except thinking he's a coward.

If anything, this episode proved fooling Negan it's so easy it's a wonder no one has managed to take the reins from him already. It seems the Saviors are content enough entertaining a huge baby to point out the emperor has no clothes.

I don't think Eugene it's "biding his time", but taking the coward's way out like he always has. The Wives plan was sound: take Negan out, and the rest would just tear each other apart. He wasted a precious opportunity.

Because he is smart enough to know that if Negan would get rid of someone as valuable as a doctor then he would get rid of him that easily also if it suited him.

Yes, I agree. It's unclear as to Eugene's motives and sincerity to Negan. He may not even know his own motives.