If your team consists of backend engineers who haven’t done full stack in a while and front end engineers who are already good with react/vue then I’ve found it

If your team consists of backend engineers who haven’t done full stack in a while and front end engineers who are already good with react/vue then I’ve found it easier to just go SPA instead of everyone trying to remember how Django/Rails works. Also if your server side stuff has to or probably will have to talk to other machines then you’re just saving yourself the trouble of implementing the human only version. If your team consists of mostly people who’re used to doing rails/Django style webapps then it’s perfectly reasonable to not build an SPA.