I am observing that you are right, there is no definition globally accepted by the community on what an SPA is. For me, a better definition is the one that it

I am observing that you are right, there is no definition globally accepted by the community on what an SPA is. For me, a better definition is the one that it is independent of the technology used to implement it. An SPa is a way to structure an app, is not a vendor feature or a tool. While is true about nowadays angular et all are the tools commonly used to create SPA, the tool shouldn't have the power to change the definition, so your knockout MVC is still an SPA. If the OT chose a complicated set of tools to develop an SPA, then is his decision and the difficulty lies in his decision of the tools chosen, not on the SPA type of app.