So I'm not sure who, if indeed this someone exist within the game our outside the game, are having cognitive dissonance.
OP hyperboled a little, but their problem was that you can
admit to Alfira's murder, which has been portrayed as exceptionally brutal, and they just shrug it off as "probably the tadpole", yet later your love interest seems surprised you have such cravings when you get to the unique cutscene in act 2, as if you never admitted to the Alfira murder.
I'm currently doing a Dark Urge run and as much fun as I'm having with it, there are some thing that make me go... uhm???
So, Alfira came over and wanted to join our group. In his sleep my character murdered her in the most horrendous way possible. He gets rid of the body but there's still a huge sacrificial circle of blood on the ground.
Days go by and no-one asks about Alfira or the circle. My character decides to 'rescue the grove' because from all the information he has he feels that Halsin is his best bet for a cure. Then comes the party at the camp and still no-one is worried about Alfira and nobody comments on the blood circle. Also, this circle is right in front of where Astarion is standing and there's not even a snarky comment?
As you can see I'm still early in but the lack of interest surprised me a bit. That said, I do think that after playing four 'good' characters it's a lot of fun to pick the darker or more selfish dialogue options.
Yes, the circle not disappearing is funny but certainly odd. If you choose the other options, you do at least get some acknowledgement that it happened the morning after.