So are you.
Evil is evil and was never good, and never will be good, no matter what taxonomy is used. Things are created the way they are God would not mislead His prophets to think they are something else.
God leads and men followimperfectly. God's truth is always true. Man's perception and interpretation of God's truth are not. Matthew thought he was quoting Jeremiah but ended up quoting Zechariah. Do you believe the Holy Spirit misguided Matthew? I don't. I am certain it was his own omission.