the backend i have is of course written in such a framework. (it's not laravel[0], but it could be)
i am not trying to diss backend frameworks here as bad. any of these would be a good choice for the backend.
the point is that thanks to SPA and CRUD i get to reuse that same backend over and over with little or no modification. (modifications amount to fixing bugs and very rarely adding new features to the API)
my backend development time now is effectively 0!
[0] (i have been working with laravel, django and others (primarily roxen and pike) before, and while i am not a fan of php, i did find laravel pleasant to work with)