Unfortunately, I must disagree. Extensions WHEN APPLIED AND WORN PROPERLY can give a client the perfect look they desire. Extensions as well as natural hair that is constantly pulled or styled excessively, will also result in hair damage and/or loss however we cannot sway women from styling their hair, rather we teach them how to do it "properly" to ensure that they do not suffer damage.
I found the article to be very insightful and it should be something a client is aware of so they understand the importance of finding a qualified stylist and knowing how to care for their style.
Just as cosmetic enhancements, as long as they are done properly and cared for properly, the client will indeed be much happier with the temporary end result.