It depends on who you ask. :) We've created Django-nonrel and djangoappengine for people who need GAE's scalability or at least don't want to deal with scalability as an afterthought. Of course using the GAE datastore for everything can be really painful (and dbindexer is supposed to help in this regard - at least a little bit), but now you can have the best of both worlds and pick the right tool for the task.