I think we can blame the community for not training players. However, we can also blame the training system, too.
For example - look at my NT player Wendon. Next season he'll be 22 and will start his downhill climb into very slow training. At that point, I can either decide to keep training him to help the NT or sell him and get lots of cash to help my team.
I don't have to worry about his salary so much since he is probably one of the most balanced players out there. However, I would hate to be training a centre for the NT who just hit 22. Would you even be able to afford to keep training him unless you are having a good season in Naismith?
The only benefit to having an NT player is a slight experience bonus and maybe (a little) glory. At some point you are going to be hurting your team by continuing to train NT players.
Run of the Mill Canadian Manager