Fujimoto saw the reception of Part 1, including all the degenerate fanart, and has made it his mission to cure the fanbase of its lecherous tendencies.
To achieve that, Denji has to become the horniest man alive, always succumbing to the nice bodies of evil women, until we get fed up with it and realize how unhealthy perpetual lust is.
When you complain about Denji you are complaining about (You).
>more lewd Fumiko fanart after this chapter
See? /csm/ just can't help tehmselves, just like our HERO.