Yes! Especially if what I'm wanting to do is take a video of my kid. By the time I get the photo app to respond well enough to swipe over to video and let it readjust itself, I have missed the moment by seconds.
Back in the 90s I decided we needed a real-time UX - hard real-time guarantees. I had no idea how to even start with this, especially as the only OSes I knew well were UNIX-like, none of which did real-time. There was QNX(?) but I didn’t have access to play with it.
So do we need an effort to make a new real-time phone OS? Kinda like the Firefox phone OS project but built on an OS that allows guarantees?