...... like..... haaa.... "Harem Trash" is a good quote to describe this. Like he wants to be a villain, but what he describes is instead a hedonist which is honestly fine. It's just the author is trying to blend works of other peoples creations and wanted to make a trashy isekai work.
This is my head cannon, the author made this work with the purpose to make a trashy isekai with an added harem to try to appeal to people, this work ain't supposed to be taken seriously and is honestly just brain off reading and that'd just boring to.me