Of the people I know who hold this view I know many software developers and zero other people. Even other very technical people, like data scientists, prefer an interactive interface to a series of pages.
Of the people I know, ranging from programmers to HR people, most of them prefer the series of pages over the interactive interface for business processes. The series of pages makes it obvious that something has happened in response to input.
OTOH, for stuff like Facebook they absolutely prefer the interactive interface.
This seems like an orthogonal question? I agree that whatever technology one chooses, buttons should be responsive when pressed. A page load is not the only kind of button press response that is possible.