…but passing on the right is illegal.

TIL about hidden options in Bitwarden, thanks!

I of course already use the password generator to make up the random string, and often you can’t use special characters there since they expect real words as answers.

This is the right answer. I never answer those, you add new entries in your password manager in the notes for the main site.

If you answer truthfully to any one of those “security questions”, your account is at risk.