This late afternoon, I have met a couple of guys in the West Coast in a series. On 40m, of course, on CW. They were using decoder. One guy told me that. The other was apparently another decoder user because there was a long pause before he started transmission after reception. One guy delightfully told me it was his very first contact on CW. However, there won't be any conversation going on between us. I told them to quit using decoder and to train themselves to listen codes with their own ears. No other ways that enable them to converse on this mode in the future. Needless to say this but it should be repeated to those people again and again.
After those frustrating QSOs, I was called by David VE7LE. He was another beginner on CW. What was different from the other two in the case of David is that he won't hesitate asking me to slow down and to repeat anything he could not copy. It is really a simple fact but I have realized that telling he could not copy and asking me to repeat it, he has already achieved conversation with me. Ignoring that fact or pretending to be able to copy is opposite to the real conversation. Asking me to repeat something means that he would converse with me.
The important thing is the attitude toward the others. Progress may start only with his attitude.