There's something about how Dorian ruins/corrupts people, as if he himself is a really evil drug, that he addicts other people and doesn't care

Yes, I was having a reread because of this discussion, and aside from all the decoy-trollery about what specific Unspeakable Depravity Dorian himself has committed that Basil has seen evidence of, this was what caught my attention this time around.

If one reads without looking for Implications (even though Wilde has scattered them so temptingly over the text) or trying to figure out "the most terrible confession I ever read", what Basil says is that everyone who's become close to Dorian has made awful life-ruining decisions, of fairly diverse kinds.

But it hit me that to a reader now, that's maybe MORE disturbing and interesting than the various possible depravities - "I don't know what you're doing but everyone around you self-destructs while you remain unharmed."

Much creepier and more of a horror story than "Oh, maybe he went to a Satanic orgy or something".