Agree Never. Quite possibly, this is the cruelest thing that you could do to someone. Particularly when you don't understand it or only know part of the truth (at best), anyway. Let people live; let people learn.
Stop allowing other people to dilute or poison your day with their words or opinions. Stand strong in the truth of your beauty and journey through your day without attachment to the validation of others. - Steve Maraboli and AMEN!
10 Communication Secrets of Great Leaders. This article from Forbes Magazine discusses many communication strategies that leaders should possess to make the largest impact. Poor communication skills are problem behaviors that need to be extinguished.
Just because you aren't given the credit and haven't been recognised for your work doesn't mean you have to give up or stop. You don't always need credit, other people do not always have to know what you are capable of doing as long as you do.