I used the putter swing for years and years, but just never developed any feel or direction control. When I made solid contact I would blast it way past the hole. This caused me to swing slower/decelerate at impact the next time which led to poor contact and chunked chips. Chunked chips would make me adjust, then I would blade the next one. Repeat that cycle over and over.
Tried a wrist hinge flippy chip and it worked. Then worked again and again and again. I'll stick with it until it no longer works!