Ok, then it's not the condition of "being a black hole" what makes it "suck in", but its mass, which can be varied (according to Stephen Hawking, the theoretical minimum mass to form a black hole would be 0.01 mg)

Saying that a black hole "sucks in" in that sense is as valid as saying that any object with mass (like a tenis ball) "sucks in". But I don't think that's what the article was referring to as a "myth", the myth the article targets is the suck power being a particular characteristic of black holes.