I wouldn't be surprised if non-techies couldn't give a toss if you're using a traditional MPA with a sprinkling of ajax for the bits that really need to be responsive or a total SPA.
I'm beginning to suspect the only people who want a SPA are the programmers. Has anyone even got any proof that a SPA is better than a MPA in terms of customer satisfaction? It seems to have all originated from a technical need rather than a customer need. I still prefer doing most thing server-side and then sending snippets of html to update the bits on the page that need updating, occasionally using client-side view templates/JSON, depending on the case.