I had not seen this, though I’ve been following what Jazzman has been saying about bending. I finally figured out that you need to practice is working up this kind of sound on your melodica. Jazzman1945ify gives links to a couple of his blues/bending audio files here .
I have been finding it easier to get the feel of bending on cheaper melodicas, especially the Suzuki STUDY-32. It’s a melodica it’s easy to get off key on.