I don't know if clicking No on the Dart Traps just means limited dart traps, but I turned them off for a world with Wendy (because Abigail kept triggering them in my last world) and I still get shot at when I chip off a relic or I or Abigail stepping on a trigger.
I like to play around with world customization to see what kind of world gen I get and it still seems to pick and choose from the things I want to alter. I also had many vines (both attacking vines and just hanging) despite putting them on less.
Steps to Reproduce
change to no dart traps (or play around with other options) and see if they're changed or not
This issue has not been confirmed by a developer yet.