No, it isn't. Plenty of people bitch about not being a good conversationalist, or a witty person, but enough of the time for them to not bitch about it normal people seem to be able to tell when someone else is being sarcastic or not. And most people(apparently) can read each others emotions with excellent clarity. And most people are not only capable of filling free space in and out of specific social situations with innane chatter(small talk), they seem to be most inclined to want to do that. Too much meaningful conversation bothers them.
Just because somebody is an asshole or has lead a nasty life doesn't mean they lack these skills, or that they are hard for them, they just don't use them as much or choose to use them differently.