That’s what I was thinking too.
And for me it’s really about making the whole stack easier to run in dev and in production. No fiddeling with webserver - FCGI - FPM and so on. This is really a mess and hard to get right (in my experience).
It shouldn’t be required to run Flow this way - but I think a somewhat opinionated default setup where you can just start a single process (in dev and production!) would be really compelling for me.