"Considered harmful" is like a Betteridge-baiting headline. It is important to remember that in the original article, "GO TO considered harmful", Dijkstra a) didn't choose the title; and b) was wrong about GO TO; it is tremendously useful under the right circumstances with no real substitute (except maybe for TCO). Yet how many times is "don't use goto" cited as an iron rule of programming?
So when I see "considered harmful" I've got my eye open for a potential thought-stopper, whether deliberately created or not.