Okay makes sense then. I just don't see any of the elder people who I have setup Netflix risk pressing the cancel button because they can't get it set up. However, they do try to remove their credit card number and it doesn't let you. Which is actually another annoyance, why can't I delete my credit card from your site. It's still a dark pattern or just bad data security.
When most people see "cancel membership" they will think it is immediately. They will just wait to cancel until the last possible day and when they forget it's free money for Netflix. It's smart/shady. I'm sure it contributes to their decreasing churn.