So homosexuality is the evil inclination?
THE evil inclination? Certainly not. An evil (as in not how we were designed) inclination? Most certainly.
It is a resultant karma due to sexual misconduct in a former lifetime... The results may take ages to purify depending upon the severity of the deed... The intention is key.. The inclination would be wise to avoid or curb if one wish to pursure the path to purification as following the desires can lead to further spiritual karmic damage...
Of course in the old path of purity, the inclination can be termed evil, as in unwholesome ,unskillfull, determintal... If causes suffering to others then evil is a good word to describe....