For the record, I was making a general point about one of the tradeoffs with an SPA vs MPA, not making the claim that MPAs are universally better than SPAs for all use cases. I think most reasonable people can agree that there are places where SPAs are called for and places where they're not. It's the ambiguous cases that draw the conflict, and psychologically the anti-SPA people focus on the really shitty ones and the pro-SPA people focus on the use cases that would be impossible in an MPA.

Also, for what it's worth, I've worked full-time on one of the largest SPA projects in the world (~500 engineers contributing frontend code to it on an average week), so this is not coming from a place of total ignorance.