I also think the number of situations in which an SPA architecture can be recommended is dwindling, chiefly due to how good the web platform has become (and how much better it’s getting every day). And because so much of the rest of the ‘struggle stack’ (transpilers, unique dialects, etc.) was built to get around gaps in the web platform that no longer exist, the use cases for these tools is dwindling in tandem.
This is good news: not only can we avoid piling up transient knowledge about a seemingly endless stream of dependencies, we can also eject from the routine stress of those dependencies changing or breaking under our feet and throwing wrenches into our workflows — all while delivering more robust and performant websites to end users.