The big real question here is that, have you real been a part of the bitcoin process?  or have this people you were talking about experience the same experience that the pioneers have been experiencing in terms of transactions?

I personally can say that yes I can buy things  that I wanted using bitcoin. With just the right tool and platform others can also do it. Mind that bitcoin is still progressing, experimental changes have been made almost every year just to keep the right track. 

Don't just expect that you can buy all the physical products directly with bitcoin as those were a part of the government rules that oppose the basic rules of bitcoin. On the other hand since bitcoin is a digital currency. I can easily purchase digital assets by the use of it and for me that is very important thing that other bitcoin"cryptocurrency" user should have to understand.