It's tradition. Every generation complains about the next one and worries their children will be the first to not do as well as their parents. Most of the complaints and worries are standard and have been for some time. I remember in university reading articles by mid-19th century parents complaining about kids not reading enough because the kids were spending all their time going to plays...
There are ancient Roman texts complaining about the kids those days. I believe even Socrates complained about younger generations. Complaining about the next generation is really as old as human civilization.
You can seriously do a google search for 1990's and find all the articles saying basically all the same things.
30s of googling and here's an article from 1998 saying the same things about Gen X: http://www.strategy-business.com/article/9760?gko=fea27