This article have missed to cover about low fee newbies used to put to save cost on payments leading unconfirmed transaction for many hours. That will make them panic about bitcoin and they will start blaming bitcoin network for it and some may even opt out from the idea of using bitcoin again. 
True i just getting started and my friend do a transaction for me and i was so frustrated for the receiving message that take almost 6hours i thought that i already get scam by my friend with that problem.