The first definition in the OED for "perverse" is as follows:
[a. F. pervers, -e. ad. L. perversus turned the wrong way, awry, perverse, pa. appl. of pervertére to turn about, subvert, PERVERT]
1. Turned away from the right way or from what is right or good; perverted; wicked
The Oxford French Dictionary lists "pervertir" as "to corrupt," and a synonym of "pervers" as "dépravé"
A common current meaning listed in the American Heritage Dictionary of "perversion" is "2. A sexual practice or act considered deviant."
I think it is not very unusual or perverse to consider it perverse to talk about strangling a beloved and saying the beloved will love you for doing so--or to talk about doing a girl in and keeping her body in a bath with a gallon of lysol or to imagine oneself a young girl raped by an old man in a forest, or to say that "My Madness" is an old, dirty, muttering drunk sitting on the curb, or to talk about filling "Columbo's prick / With Muriatic acid."
Maybe I'm just extremely prudish or moralistic, but I really think there is a fairly widespread resistance to murder, rape, drunkenness, and violation/cruelty.
And I did not ever attribute these desires or actions to Eliot himself; I said they were depicted in the poems. They are. That is not an opinion, just a fact. To write of poems about these things as if they were NOT depicted in the poems is to eliminate the poet's words from whatever one calls a poem.