[sidlls]

How is SPA a simpler starting point? It requires more code and more abstractions in the client from the onset. One might argue that that complexity would just exist in the backend in an MPA, but that's not true: there is some additional backend complexity, but not nearly as much as required to support the multitude of clients that exist for the baseline in an MPA.

[lacerrr]

Because in most web apps you still need to have client-side logic anyways, like form validation and such, so familiarizing yourself with a SPA framework is simpler than learning to implement this in addition to the MPA framework you'll probably end up using anyway.