I met some chuckers today that turned out to be ok guys. They saw me park some long holes and wanted to know how to throw. I showed them how to throw backhand instead of the stupid flick they were doing. Also they did not know to put all your fingers under the rim, which is another mistake almost all newbs make.
So, chuckers can be transformed into non-chuckers if they are willing to learn and they actually want to improve their game.